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Finding the Fourth Proportional to 484,545.87, 726,761.57 and 129,587.40

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Solution

The fourth proportional to 484,545.87, 726,761.57 and 129,587.40 is: 194,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,545.87 : 726,761.57 = 129,587.40 : x
  2. Step 2: Convert to fraction form
    484,545.87/726,761.57 = 129,587.40/x
  3. Step 3: Cross multiply
    484,545.87x = 726,761.57 × 129,587.40
  4. Step 4: Simplify right side
    484,545.87x = 94,179,141,628.28
  5. Step 5: Solve for x
    x = 94,179,141,628.28/484,545.87
  6. Step 6: Final answer
    x = 194,365.79

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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.