For this case we can solve the problem by making the following rule of three:
1 acre ------------> 4 cows
500 acres -------> x
From here, we clear the value of x.
We have then:
![x = (500/1) * (4)](https://img.qammunity.org/2019/formulas/mathematics/high-school/9vj5r4n3e3trakelvohzsz0gcg2qd6zoqs.png)
Calculating the value of x we have:
Answer:
there are 2,000 cows on the acreage