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Finding the Fourth Proportional to 681,553.49, 940,505.43 and 375,628.92

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Solution

The fourth proportional to 681,553.49, 940,505.43 and 375,628.92 is: 518,346.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,553.49 : 940,505.43 = 375,628.92 : x
  2. Step 2: Convert to fraction form
    681,553.49/940,505.43 = 375,628.92/x
  3. Step 3: Cross multiply
    681,553.49x = 940,505.43 × 375,628.92
  4. Step 4: Simplify right side
    681,553.49x = 353,281,036,806.75
  5. Step 5: Solve for x
    x = 353,281,036,806.75/681,553.49
  6. Step 6: Final answer
    x = 518,346.75

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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.