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Finding the Fourth Proportional to 636,302.27, 878,089.25 and 349,819.85

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Solution

The fourth proportional to 636,302.27, 878,089.25 and 349,819.85 is: 482,747.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,302.27 : 878,089.25 = 349,819.85 : x
  2. Step 2: Convert to fraction form
    636,302.27/878,089.25 = 349,819.85/x
  3. Step 3: Cross multiply
    636,302.27x = 878,089.25 × 349,819.85
  4. Step 4: Simplify right side
    636,302.27x = 307,173,049,721.61
  5. Step 5: Solve for x
    x = 307,173,049,721.61/636,302.27
  6. Step 6: Final answer
    x = 482,747.06

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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.