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Finding the Fourth Proportional to 636,272.46, 878,072.76 and 349,799.76

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Solution

The fourth proportional to 636,272.46, 878,072.76 and 349,799.76 is: 482,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,272.46 : 878,072.76 = 349,799.76 : x
  2. Step 2: Convert to fraction form
    636,272.46/878,072.76 = 349,799.76/x
  3. Step 3: Cross multiply
    636,272.46x = 878,072.76 × 349,799.76
  4. Step 4: Simplify right side
    636,272.46x = 307,149,640,710.54
  5. Step 5: Solve for x
    x = 307,149,640,710.54/636,272.46
  6. Step 6: Final answer
    x = 482,732.89

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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.