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Finding the Fourth Proportional to 389,487.60, 584,231.40 and 332,406.90

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Solution

The fourth proportional to 389,487.60, 584,231.40 and 332,406.90 is: 498,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,487.60 : 584,231.40 = 332,406.90 : x
  2. Step 2: Convert to fraction form
    389,487.60/584,231.40 = 332,406.90/x
  3. Step 3: Cross multiply
    389,487.60x = 584,231.40 × 332,406.90
  4. Step 4: Simplify right side
    389,487.60x = 194,202,548,556.66
  5. Step 5: Solve for x
    x = 194,202,548,556.66/389,487.60
  6. Step 6: Final answer
    x = 498,610.35

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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.