Le Corbusier’s approach to the investigation that both Vitruvius and Da Vinci had embarked on before him – was the effort to find a mathematical relationship between man's measurements and nature. In his calculations, this relationship, which itself was called the Modulor, was a system of measurements on the human scale based on the golden ratio. His finalized Modulor was composed of three main measures: the height of the standardized man, which was 1.83 m or 6 feet (previously, the modulor was 1.75 m tall, which was equivalent to the average Frenchman); the height of the standard man with an arm raised, which was 2.26 m; and the height of the navel, considered the halfway mark to the tip of raised arm, which was 1.13 m. These are also the three intervals that constitute Fibonacci's golden ratio.