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Finding the Fourth Proportional to 681,007.22, 939,781.14 and 375,077.78

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Solution

The fourth proportional to 681,007.22, 939,781.14 and 375,077.78 is: 517,602.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,007.22 : 939,781.14 = 375,077.78 : x
  2. Step 2: Convert to fraction form
    681,007.22/939,781.14 = 375,077.78/x
  3. Step 3: Cross multiply
    681,007.22x = 939,781.14 × 375,077.78
  4. Step 4: Simplify right side
    681,007.22x = 352,491,023,677.07
  5. Step 5: Solve for x
    x = 352,491,023,677.07/681,007.22
  6. Step 6: Final answer
    x = 517,602.48

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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.