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Finding the Fourth Proportional to 667,350.13, 920,938.59 and 361,419.49

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Solution

The fourth proportional to 667,350.13, 920,938.59 and 361,419.49 is: 498,756.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,350.13 : 920,938.59 = 361,419.49 : x
  2. Step 2: Convert to fraction form
    667,350.13/920,938.59 = 361,419.49/x
  3. Step 3: Cross multiply
    667,350.13x = 920,938.59 × 361,419.49
  4. Step 4: Simplify right side
    667,350.13x = 332,845,155,519.12
  5. Step 5: Solve for x
    x = 332,845,155,519.12/667,350.13
  6. Step 6: Final answer
    x = 498,756.41

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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.