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Finding the Fourth Proportional to 636,257.43, 878,052.02 and 349,784.73

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Solution

The fourth proportional to 636,257.43, 878,052.02 and 349,784.73 is: 482,712.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,257.43 : 878,052.02 = 349,784.73 : x
  2. Step 2: Convert to fraction form
    636,257.43/878,052.02 = 349,784.73/x
  3. Step 3: Cross multiply
    636,257.43x = 878,052.02 × 349,784.73
  4. Step 4: Simplify right side
    636,257.43x = 307,129,186,992.73
  5. Step 5: Solve for x
    x = 307,129,186,992.73/636,257.43
  6. Step 6: Final answer
    x = 482,712.14

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1.5x scale

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.