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Finding the Fourth Proportional to 487,148.10, 729,944.55 and 407,832.90

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Solution

The fourth proportional to 487,148.10, 729,944.55 and 407,832.90 is: 611,098.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,148.10 : 729,944.55 = 407,832.90 : x
  2. Step 2: Convert to fraction form
    487,148.10/729,944.55 = 407,832.90/x
  3. Step 3: Cross multiply
    487,148.10x = 729,944.55 × 407,832.90
  4. Step 4: Simplify right side
    487,148.10x = 297,695,402,665.70
  5. Step 5: Solve for x
    x = 297,695,402,665.70/487,148.10
  6. Step 6: Final answer
    x = 611,098.36

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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.