How much is the down payment of 30% for 720,000 houses?

2 16000 yuan. The relationship between down payment and the total house price and down payment ratio can be expressed by the following mathematical formula: down payment is equal to the total price multiplied by the down payment ratio. This formula shows that the down payment is the product of the total price and the down payment ratio. In this problem, the total price is equal to 720,000, and the down payment ratio is equal to 0.3. Substituting these values into the above formula can get the answer, and the result is a down payment of 2 16000 yuan.