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Finding the Fourth Proportional to 453,781.70, 680,672.55 and 424,257.20

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Solution

The fourth proportional to 453,781.70, 680,672.55 and 424,257.20 is: 636,385.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,781.70 : 680,672.55 = 424,257.20 : x
  2. Step 2: Convert to fraction form
    453,781.70/680,672.55 = 424,257.20/x
  3. Step 3: Cross multiply
    453,781.70x = 680,672.55 × 424,257.20
  4. Step 4: Simplify right side
    453,781.70x = 288,780,230,179.86
  5. Step 5: Solve for x
    x = 288,780,230,179.86/453,781.70
  6. Step 6: Final answer
    x = 636,385.80

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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.