The rank size rule states that the largest city in a given country will have of the population of the largest city in that country. If the largest city has a population 1,000,000, and we want to know the population of the fourth largest city, it will have of the population of the largest city. of 1,000,000 is 250,000 people.

The “rank-size rule” is related to the relative size of cities. According to the rank-size rule, there should be a larger number of small cities than bigger cities. Also, this rule predicts that the larger a city’s population is then the fewer number of cities there should be in the surrounding area with a similar population.