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Finding the Fourth Proportional to 636,337.35, 878,123.09 and 349,855.22

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Solution

The fourth proportional to 636,337.35, 878,123.09 and 349,855.22 is: 482,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,337.35 : 878,123.09 = 349,855.22 : x
  2. Step 2: Convert to fraction form
    636,337.35/878,123.09 = 349,855.22/x
  3. Step 3: Cross multiply
    636,337.35x = 878,123.09 × 349,855.22
  4. Step 4: Simplify right side
    636,337.35x = 307,215,949,908.98
  5. Step 5: Solve for x
    x = 307,215,949,908.98/636,337.35
  6. Step 6: Final answer
    x = 482,787.86

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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.