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Finding the Fourth Proportional to 494,715.97, 682,708.26 and 279,851.47

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Solution

The fourth proportional to 494,715.97, 682,708.26 and 279,851.47 is: 386,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,715.97 : 682,708.26 = 279,851.47 : x
  2. Step 2: Convert to fraction form
    494,715.97/682,708.26 = 279,851.47/x
  3. Step 3: Cross multiply
    494,715.97x = 682,708.26 × 279,851.47
  4. Step 4: Simplify right side
    494,715.97x = 191,056,910,142.14
  5. Step 5: Solve for x
    x = 191,056,910,142.14/494,715.97
  6. Step 6: Final answer
    x = 386,195.15

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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.