Home / 812,387.38-1,121,157.71-449,844.97

Finding the Fourth Proportional to 812,387.38, 1,121,157.71 and 449,844.97

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Solution

The fourth proportional to 812,387.38, 1,121,157.71 and 449,844.97 is: 620,821.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,387.38 : 1,121,157.71 = 449,844.97 : x
  2. Step 2: Convert to fraction form
    812,387.38/1,121,157.71 = 449,844.97/x
  3. Step 3: Cross multiply
    812,387.38x = 1,121,157.71 × 449,844.97
  4. Step 4: Simplify right side
    812,387.38x = 504,347,155,572.44
  5. Step 5: Solve for x
    x = 504,347,155,572.44/812,387.38
  6. Step 6: Final answer
    x = 620,821.01

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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.