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Finding the Fourth Proportional to 324,635.10, 486,952.65 and 288,999.90

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Solution

The fourth proportional to 324,635.10, 486,952.65 and 288,999.90 is: 433,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,635.10 : 486,952.65 = 288,999.90 : x
  2. Step 2: Convert to fraction form
    324,635.10/486,952.65 = 288,999.90/x
  3. Step 3: Cross multiply
    324,635.10x = 486,952.65 × 288,999.90
  4. Step 4: Simplify right side
    324,635.10x = 140,729,267,154.74
  5. Step 5: Solve for x
    x = 140,729,267,154.74/324,635.10
  6. Step 6: Final answer
    x = 433,499.85

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Similar ratio
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1.5x scale

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.