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Finding the Fourth Proportional to 724,691.92, 1,000,041.42 and 402,422.44

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Solution

The fourth proportional to 724,691.92, 1,000,041.42 and 402,422.44 is: 555,324.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,691.92 : 1,000,041.42 = 402,422.44 : x
  2. Step 2: Convert to fraction form
    724,691.92/1,000,041.42 = 402,422.44/x
  3. Step 3: Cross multiply
    724,691.92x = 1,000,041.42 × 402,422.44
  4. Step 4: Simplify right side
    724,691.92x = 402,439,108,337.47
  5. Step 5: Solve for x
    x = 402,439,108,337.47/724,691.92
  6. Step 6: Final answer
    x = 555,324.40

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Double scale
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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.