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Finding the Fourth Proportional to 574,489.80, 861,734.70 and 511,504.20

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Solution

The fourth proportional to 574,489.80, 861,734.70 and 511,504.20 is: 767,256.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,489.80 : 861,734.70 = 511,504.20 : x
  2. Step 2: Convert to fraction form
    574,489.80/861,734.70 = 511,504.20/x
  3. Step 3: Cross multiply
    574,489.80x = 861,734.70 × 511,504.20
  4. Step 4: Simplify right side
    574,489.80x = 440,780,918,335.74
  5. Step 5: Solve for x
    x = 440,780,918,335.74/574,489.80
  6. Step 6: Final answer
    x = 767,256.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.