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Finding the Fourth Proportional to 424,640.70, 636,961.05 and 291,930.30

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Solution

The fourth proportional to 424,640.70, 636,961.05 and 291,930.30 is: 437,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,640.70 : 636,961.05 = 291,930.30 : x
  2. Step 2: Convert to fraction form
    424,640.70/636,961.05 = 291,930.30/x
  3. Step 3: Cross multiply
    424,640.70x = 636,961.05 × 291,930.30
  4. Step 4: Simplify right side
    424,640.70x = 185,948,230,414.82
  5. Step 5: Solve for x
    x = 185,948,230,414.82/424,640.70
  6. Step 6: Final answer
    x = 437,895.45

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Similar ratio
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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.