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Finding the Fourth Proportional to 914,276, 1,371,149.20 and 274,553.92

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Solution

The fourth proportional to 914,276, 1,371,149.20 and 274,553.92 is: 411,751.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,276 : 1,371,149.20 = 274,553.92 : x
  2. Step 2: Convert to fraction form
    914,276/1,371,149.20 = 274,553.92/x
  3. Step 3: Cross multiply
    914,276x = 1,371,149.20 × 274,553.92
  4. Step 4: Simplify right side
    914,276x = 376,454,387,764.86
  5. Step 5: Solve for x
    x = 376,454,387,764.86/914,276
  6. Step 6: Final answer
    x = 411,751.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.