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Finding the Fourth Proportional to 575,028.29, 861,436.96 and 321,539.96

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Solution

The fourth proportional to 575,028.29, 861,436.96 and 321,539.96 is: 481,691.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,028.29 : 861,436.96 = 321,539.96 : x
  2. Step 2: Convert to fraction form
    575,028.29/861,436.96 = 321,539.96/x
  3. Step 3: Cross multiply
    575,028.29x = 861,436.96 × 321,539.96
  4. Step 4: Simplify right side
    575,028.29x = 276,986,407,010.66
  5. Step 5: Solve for x
    x = 276,986,407,010.66/575,028.29
  6. Step 6: Final answer
    x = 481,691.79

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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.