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Finding the Fourth Proportional to 625,874.75, 863,699.61 and 339,391.42

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Solution

The fourth proportional to 625,874.75, 863,699.61 and 339,391.42 is: 468,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,874.75 : 863,699.61 = 339,391.42 : x
  2. Step 2: Convert to fraction form
    625,874.75/863,699.61 = 339,391.42/x
  3. Step 3: Cross multiply
    625,874.75x = 863,699.61 × 339,391.42
  4. Step 4: Simplify right side
    625,874.75x = 293,132,234,295.74
  5. Step 5: Solve for x
    x = 293,132,234,295.74/625,874.75
  6. Step 6: Final answer
    x = 468,356.06

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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.