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Finding the Fourth Proportional to 681,424.47, 940,406.93 and 375,500.33

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Solution

The fourth proportional to 681,424.47, 940,406.93 and 375,500.33 is: 518,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,424.47 : 940,406.93 = 375,500.33 : x
  2. Step 2: Convert to fraction form
    681,424.47/940,406.93 = 375,500.33/x
  3. Step 3: Cross multiply
    681,424.47x = 940,406.93 × 375,500.33
  4. Step 4: Simplify right side
    681,424.47x = 353,123,105,969.75
  5. Step 5: Solve for x
    x = 353,123,105,969.75/681,424.47
  6. Step 6: Final answer
    x = 518,213.13

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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.