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Finding the Fourth Proportional to 694,722.92, 958,897.86 and 393,091.88

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Solution

The fourth proportional to 694,722.92, 958,897.86 and 393,091.88 is: 542,568.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,722.92 : 958,897.86 = 393,091.88 : x
  2. Step 2: Convert to fraction form
    694,722.92/958,897.86 = 393,091.88/x
  3. Step 3: Cross multiply
    694,722.92x = 958,897.86 × 393,091.88
  4. Step 4: Simplify right side
    694,722.92x = 376,934,962,515.38
  5. Step 5: Solve for x
    x = 376,934,962,515.38/694,722.92
  6. Step 6: Final answer
    x = 542,568.77

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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.