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Finding the Fourth Proportional to 681,178.50, 940,055.49 and 379,372.50

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Solution

The fourth proportional to 681,178.50, 940,055.49 and 379,372.50 is: 523,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,178.50 : 940,055.49 = 379,372.50 : x
  2. Step 2: Convert to fraction form
    681,178.50/940,055.49 = 379,372.50/x
  3. Step 3: Cross multiply
    681,178.50x = 940,055.49 × 379,372.50
  4. Step 4: Simplify right side
    681,178.50x = 356,631,201,380.03
  5. Step 5: Solve for x
    x = 356,631,201,380.03/681,178.50
  6. Step 6: Final answer
    x = 523,550.29

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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.