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Finding the Fourth Proportional to 488,446.20, 732,669.30 and 438,679.80

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Solution

The fourth proportional to 488,446.20, 732,669.30 and 438,679.80 is: 658,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,446.20 : 732,669.30 = 438,679.80 : x
  2. Step 2: Convert to fraction form
    488,446.20/732,669.30 = 438,679.80/x
  3. Step 3: Cross multiply
    488,446.20x = 732,669.30 × 438,679.80
  4. Step 4: Simplify right side
    488,446.20x = 321,407,221,990.14
  5. Step 5: Solve for x
    x = 321,407,221,990.14/488,446.20
  6. Step 6: Final answer
    x = 658,019.70

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Similar ratio
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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.