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Finding the Fourth Proportional to 451,778.16, 676,335.78 and 395,727.80

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Solution

The fourth proportional to 451,778.16, 676,335.78 and 395,727.80 is: 592,425.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,778.16 : 676,335.78 = 395,727.80 : x
  2. Step 2: Convert to fraction form
    451,778.16/676,335.78 = 395,727.80/x
  3. Step 3: Cross multiply
    451,778.16x = 676,335.78 × 395,727.80
  4. Step 4: Simplify right side
    451,778.16x = 267,644,870,280.68
  5. Step 5: Solve for x
    x = 267,644,870,280.68/451,778.16
  6. Step 6: Final answer
    x = 592,425.43

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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.