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Finding the Fourth Proportional to 636,254.43, 878,047.88 and 349,781.73

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Solution

The fourth proportional to 636,254.43, 878,047.88 and 349,781.73 is: 482,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,254.43 : 878,047.88 = 349,781.73 : x
  2. Step 2: Convert to fraction form
    636,254.43/878,047.88 = 349,781.73/x
  3. Step 3: Cross multiply
    636,254.43x = 878,047.88 × 349,781.73
  4. Step 4: Simplify right side
    636,254.43x = 307,125,104,740.32
  5. Step 5: Solve for x
    x = 307,125,104,740.32/636,254.43
  6. Step 6: Final answer
    x = 482,708.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.