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Finding the Fourth Proportional to 681,288.48, 940,165.92 and 379,476

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Solution

The fourth proportional to 681,288.48, 940,165.92 and 379,476 is: 523,670.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,288.48 : 940,165.92 = 379,476 : x
  2. Step 2: Convert to fraction form
    681,288.48/940,165.92 = 379,476/x
  3. Step 3: Cross multiply
    681,288.48x = 940,165.92 × 379,476
  4. Step 4: Simplify right side
    681,288.48x = 356,770,402,657.92
  5. Step 5: Solve for x
    x = 356,770,402,657.92/681,288.48
  6. Step 6: Final answer
    x = 523,670.09

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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.