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Finding the Fourth Proportional to 625,616.40, 863,355.06 and 339,141

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Solution

The fourth proportional to 625,616.40, 863,355.06 and 339,141 is: 468,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,616.40 : 863,355.06 = 339,141 : x
  2. Step 2: Convert to fraction form
    625,616.40/863,355.06 = 339,141/x
  3. Step 3: Cross multiply
    625,616.40x = 863,355.06 × 339,141
  4. Step 4: Simplify right side
    625,616.40x = 292,799,098,403.46
  5. Step 5: Solve for x
    x = 292,799,098,403.46/625,616.40
  6. Step 6: Final answer
    x = 468,016.98

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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.