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Finding the Fourth Proportional to 494,640.88, 682,593.28 and 279,780.68

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Solution

The fourth proportional to 494,640.88, 682,593.28 and 279,780.68 is: 386,091.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,640.88 : 682,593.28 = 279,780.68 : x
  2. Step 2: Convert to fraction form
    494,640.88/682,593.28 = 279,780.68/x
  3. Step 3: Cross multiply
    494,640.88x = 682,593.28 × 279,780.68
  4. Step 4: Simplify right side
    494,640.88x = 190,976,413,048.86
  5. Step 5: Solve for x
    x = 190,976,413,048.86/494,640.88
  6. Step 6: Final answer
    x = 386,091.04

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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.