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Finding the Fourth Proportional to 681,076.76, 939,892.41 and 375,154.49

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Solution

The fourth proportional to 681,076.76, 939,892.41 and 375,154.49 is: 517,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,076.76 : 939,892.41 = 375,154.49 : x
  2. Step 2: Convert to fraction form
    681,076.76/939,892.41 = 375,154.49/x
  3. Step 3: Cross multiply
    681,076.76x = 939,892.41 × 375,154.49
  4. Step 4: Simplify right side
    681,076.76x = 352,604,854,791.26
  5. Step 5: Solve for x
    x = 352,604,854,791.26/681,076.76
  6. Step 6: Final answer
    x = 517,716.77

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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.