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Finding the Fourth Proportional to 655,385.20, 984,114.60 and 479,129.20

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Solution

The fourth proportional to 655,385.20, 984,114.60 and 479,129.20 is: 719,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,385.20 : 984,114.60 = 479,129.20 : x
  2. Step 2: Convert to fraction form
    655,385.20/984,114.60 = 479,129.20/x
  3. Step 3: Cross multiply
    655,385.20x = 984,114.60 × 479,129.20
  4. Step 4: Simplify right side
    655,385.20x = 471,518,041,006.32
  5. Step 5: Solve for x
    x = 471,518,041,006.32/655,385.20
  6. Step 6: Final answer
    x = 719,451.77

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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.