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Finding the Fourth Proportional to 636,341.68, 878,168.46 and 349,869.16

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Solution

The fourth proportional to 636,341.68, 878,168.46 and 349,869.16 is: 482,828.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,341.68 : 878,168.46 = 349,869.16 : x
  2. Step 2: Convert to fraction form
    636,341.68/878,168.46 = 349,869.16/x
  3. Step 3: Cross multiply
    636,341.68x = 878,168.46 × 349,869.16
  4. Step 4: Simplify right side
    636,341.68x = 307,244,061,438.69
  5. Step 5: Solve for x
    x = 307,244,061,438.69/636,341.68
  6. Step 6: Final answer
    x = 482,828.76

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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.