Home / 721,028.20-995,000.10-398,729.32

Finding the Fourth Proportional to 721,028.20, 995,000.10 and 398,729.32

Calculator

Solution

The fourth proportional to 721,028.20, 995,000.10 and 398,729.32 is: 550,236.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,028.20 : 995,000.10 = 398,729.32 : x
  2. Step 2: Convert to fraction form
    721,028.20/995,000.10 = 398,729.32/x
  3. Step 3: Cross multiply
    721,028.20x = 995,000.10 × 398,729.32
  4. Step 4: Simplify right side
    721,028.20x = 396,735,713,272.93
  5. Step 5: Solve for x
    x = 396,735,713,272.93/721,028.20
  6. Step 6: Final answer
    x = 550,236.06

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.