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Finding the Fourth Proportional to 424,572.60, 636,787.41 and 120,945.44

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Solution

The fourth proportional to 424,572.60, 636,787.41 and 120,945.44 is: 181,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,572.60 : 636,787.41 = 120,945.44 : x
  2. Step 2: Convert to fraction form
    424,572.60/636,787.41 = 120,945.44/x
  3. Step 3: Cross multiply
    424,572.60x = 636,787.41 × 120,945.44
  4. Step 4: Simplify right side
    424,572.60x = 77,016,530,304.97
  5. Step 5: Solve for x
    x = 77,016,530,304.97/424,572.60
  6. Step 6: Final answer
    x = 181,397.79

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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.