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Finding the Fourth Proportional to 636,283.68, 878,049.07 and 349,801.66

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Solution

The fourth proportional to 636,283.68, 878,049.07 and 349,801.66 is: 482,713.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,283.68 : 878,049.07 = 349,801.66 : x
  2. Step 2: Convert to fraction form
    636,283.68/878,049.07 = 349,801.66/x
  3. Step 3: Cross multiply
    636,283.68x = 878,049.07 × 349,801.66
  4. Step 4: Simplify right side
    636,283.68x = 307,143,022,247.46
  5. Step 5: Solve for x
    x = 307,143,022,247.46/636,283.68
  6. Step 6: Final answer
    x = 482,713.97

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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.