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Finding the Fourth Proportional to 636,397.28, 878,228.07 and 349,935.92

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Solution

The fourth proportional to 636,397.28, 878,228.07 and 349,935.92 is: 482,911.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,397.28 : 878,228.07 = 349,935.92 : x
  2. Step 2: Convert to fraction form
    636,397.28/878,228.07 = 349,935.92/x
  3. Step 3: Cross multiply
    636,397.28x = 878,228.07 × 349,935.92
  4. Step 4: Simplify right side
    636,397.28x = 307,323,543,254.13
  5. Step 5: Solve for x
    x = 307,323,543,254.13/636,397.28
  6. Step 6: Final answer
    x = 482,911.47

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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.