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Finding the Fourth Proportional to 681,144.50, 940,008.58 and 379,338.50

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Solution

The fourth proportional to 681,144.50, 940,008.58 and 379,338.50 is: 523,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,144.50 : 940,008.58 = 379,338.50 : x
  2. Step 2: Convert to fraction form
    681,144.50/940,008.58 = 379,338.50/x
  3. Step 3: Cross multiply
    681,144.50x = 940,008.58 × 379,338.50
  4. Step 4: Simplify right side
    681,144.50x = 356,581,444,724.33
  5. Step 5: Solve for x
    x = 356,581,444,724.33/681,144.50
  6. Step 6: Final answer
    x = 523,503.38

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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.