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Finding the Fourth Proportional to 636,534.57, 878,400.17 and 350,054.66

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Solution

The fourth proportional to 636,534.57, 878,400.17 and 350,054.66 is: 483,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,534.57 : 878,400.17 = 350,054.66 : x
  2. Step 2: Convert to fraction form
    636,534.57/878,400.17 = 350,054.66/x
  3. Step 3: Cross multiply
    636,534.57x = 878,400.17 × 350,054.66
  4. Step 4: Simplify right side
    636,534.57x = 307,488,066,711.02
  5. Step 5: Solve for x
    x = 307,488,066,711.02/636,534.57
  6. Step 6: Final answer
    x = 483,065.78

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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.