JCDecaux, the largest outdoor advertising company in the world, have opted to become a partner following Paris 2024’s launch of an ambitious sponsorship strategy last month, aimed at funding and helping to raise the profile of the bid.

The Elior Group, a global contract and catering service provider, have also signed up alongside the French capital's major transport operator Régie Autonome des Transports Parisiens (RATP) and the Caisse des Dépôts Group, a public group aiming to aid growth, employment and the economic development of the country.

Each of the sponsors have invested €2 million (£1.6 million/$2.3 million) into the bid budget, organisers say, in order to become a “headline association”.

All of the backers are to be given a specific “theme” which they will then be able to promote around the country, as Paris 2024 seeks to drive public support of the bid.

Caisse des Dépôts Group are now due to develop innovative ideas for the Olympic and Paralympic Village proposed by Paris 2024, with the work aiming to showcase their expertise in developing smart cities, while JCDecaux are due to focus on connected and sustainable services to promote a connected city.

RATP’s theme will be mobility, with the operator currently running a long-term programme aimed at making Paris the first large city in the world in which all buses run with 100 per cent clean energy.

Finally, the Elior Group's target focus will be based around sport, nutrition and well-being.

The announcement of the latest sponsors comes fresh after the unveiling of La Française des Jeux as the first partner last month, with the lottery and betting company developing a Paris 2024 scratchcard due to be launched at the start of 2017.

Their theme was announced as "Women In Sport", with the company due to release promotional materials celebrating the success of female athletes.

“We are very pleased to welcome our new partners who will all make a valuable contribution to our 2024 Olympic and Paralympic Games bid campaign,” said Etienne Thobois, chief executive of Paris 2024.

“The support of Caisse des Dépôts Group, Elior Group, JCDecaux, and RATP will help to communicate important messages around sport, public health and well-being, helping citizens being better connected through new technology and how sustainability will be at the heart of our Olympic project - showcasing Paris as a Smart City that is ready to host the Games for the modern, digital era.

“We now look forward to working with our partners to spread the special message of Olympism across our city and nation so the public can really take part and engage with our campaign to become the Olympic Host City in 2024.”

Public authorities in France are contributing €30 million (£24 million/$34 million) towards the Paris bid, which has a total budget of €60 million (£47 million/$67 million).

Organisers must raise the remaining amount needed to finance their efforts themselves.

In December, it was revealed that a crowdfunding scheme had raised just six per cent towards its target of €10 million (£8 million/$11 million).

“Je rêve des Jeux” - which translates as “I dream of the Games” - had been billed as a way for supporters of the bid to back it, although organisers claimed it wasn't intended as a main source of funding.

"Je rêve des Jeux campaign was never thought as a financing tool for the Paris 2024 bid budget," a Paris 2024 spokesman said at the time.

The announcement of the four sponsors comes ahead of Paris 2024 set to unveil their logo for the bid at the Arc de Triomphe tonight, with the reveal due to take place at 20:24 Central European Time.

Paris faces the challenge of Budapest, Los Angeles and Rome in the race for the 2024 Games, with a decision set to be made by the International Olympic Committee in Lima in 2017.