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Finding the Fourth Proportional to 681,231.48, 940,087.26 and 379,419

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Solution

The fourth proportional to 681,231.48, 940,087.26 and 379,419 is: 523,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,231.48 : 940,087.26 = 379,419 : x
  2. Step 2: Convert to fraction form
    681,231.48/940,087.26 = 379,419/x
  3. Step 3: Cross multiply
    681,231.48x = 940,087.26 × 379,419
  4. Step 4: Simplify right side
    681,231.48x = 356,686,968,101.94
  5. Step 5: Solve for x
    x = 356,686,968,101.94/681,231.48
  6. Step 6: Final answer
    x = 523,591.43

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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.