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Finding the Fourth Proportional to 681,224.72, 940,090.32 and 379,418.72

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Solution

The fourth proportional to 681,224.72, 940,090.32 and 379,418.72 is: 523,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,224.72 : 940,090.32 = 379,418.72 : x
  2. Step 2: Convert to fraction form
    681,224.72/940,090.32 = 379,418.72/x
  3. Step 3: Cross multiply
    681,224.72x = 940,090.32 × 379,418.72
  4. Step 4: Simplify right side
    681,224.72x = 356,687,865,898.79
  5. Step 5: Solve for x
    x = 356,687,865,898.79/681,224.72
  6. Step 6: Final answer
    x = 523,597.95

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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.