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Finding the Fourth Proportional to 681,665.36, 940,655.59 and 375,744.15

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Solution

The fourth proportional to 681,665.36, 940,655.59 and 375,744.15 is: 518,503.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,665.36 : 940,655.59 = 375,744.15 : x
  2. Step 2: Convert to fraction form
    681,665.36/940,655.59 = 375,744.15/x
  3. Step 3: Cross multiply
    681,665.36x = 940,655.59 × 375,744.15
  4. Step 4: Simplify right side
    681,665.36x = 353,445,834,167.94
  5. Step 5: Solve for x
    x = 353,445,834,167.94/681,665.36
  6. Step 6: Final answer
    x = 518,503.44

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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.