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Finding the Fourth Proportional to 575,028.86, 861,437.80 and 321,540.52

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Solution

The fourth proportional to 575,028.86, 861,437.80 and 321,540.52 is: 481,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,028.86 : 861,437.80 = 321,540.52 : x
  2. Step 2: Convert to fraction form
    575,028.86/861,437.80 = 321,540.52/x
  3. Step 3: Cross multiply
    575,028.86x = 861,437.80 × 321,540.52
  4. Step 4: Simplify right side
    575,028.86x = 276,987,155,202.21
  5. Step 5: Solve for x
    x = 276,987,155,202.21/575,028.86
  6. Step 6: Final answer
    x = 481,692.62

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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.