Home / 724,560.25-999,854.11-402,249.60

Finding the Fourth Proportional to 724,560.25, 999,854.11 and 402,249.60

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Solution

The fourth proportional to 724,560.25, 999,854.11 and 402,249.60 is: 555,082.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,560.25 : 999,854.11 = 402,249.60 : x
  2. Step 2: Convert to fraction form
    724,560.25/999,854.11 = 402,249.60/x
  3. Step 3: Cross multiply
    724,560.25x = 999,854.11 × 402,249.60
  4. Step 4: Simplify right side
    724,560.25x = 402,190,915,805.86
  5. Step 5: Solve for x
    x = 402,190,915,805.86/724,560.25
  6. Step 6: Final answer
    x = 555,082.78

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1.5x scale

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.