Home / 812,456.96-1,121,176.88-449,873.04

Finding the Fourth Proportional to 812,456.96, 1,121,176.88 and 449,873.04

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Solution

The fourth proportional to 812,456.96, 1,121,176.88 and 449,873.04 is: 620,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,456.96 : 1,121,176.88 = 449,873.04 : x
  2. Step 2: Convert to fraction form
    812,456.96/1,121,176.88 = 449,873.04/x
  3. Step 3: Cross multiply
    812,456.96x = 1,121,176.88 × 449,873.04
  4. Step 4: Simplify right side
    812,456.96x = 504,387,251,383.32
  5. Step 5: Solve for x
    x = 504,387,251,383.32/812,456.96
  6. Step 6: Final answer
    x = 620,817.20

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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.