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Finding the Fourth Proportional to 539,397.20, 807,540.60 and 329,445.20

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Solution

The fourth proportional to 539,397.20, 807,540.60 and 329,445.20 is: 493,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,397.20 : 807,540.60 = 329,445.20 : x
  2. Step 2: Convert to fraction form
    539,397.20/807,540.60 = 329,445.20/x
  3. Step 3: Cross multiply
    539,397.20x = 807,540.60 × 329,445.20
  4. Step 4: Simplify right side
    539,397.20x = 266,040,374,475.12
  5. Step 5: Solve for x
    x = 266,040,374,475.12/539,397.20
  6. Step 6: Final answer
    x = 493,217.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.