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Finding the Fourth Proportional to 488,447.20, 732,670.80 and 438,680.80

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Solution

The fourth proportional to 488,447.20, 732,670.80 and 438,680.80 is: 658,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,447.20 : 732,670.80 = 438,680.80 : x
  2. Step 2: Convert to fraction form
    488,447.20/732,670.80 = 438,680.80/x
  3. Step 3: Cross multiply
    488,447.20x = 732,670.80 × 438,680.80
  4. Step 4: Simplify right side
    488,447.20x = 321,408,612,680.64
  5. Step 5: Solve for x
    x = 321,408,612,680.64/488,447.20
  6. Step 6: Final answer
    x = 658,021.20

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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.