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Finding the Fourth Proportional to 488,515.20, 732,945.60 and 471,235.20

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Solution

The fourth proportional to 488,515.20, 732,945.60 and 471,235.20 is: 707,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,515.20 : 732,945.60 = 471,235.20 : x
  2. Step 2: Convert to fraction form
    488,515.20/732,945.60 = 471,235.20/x
  3. Step 3: Cross multiply
    488,515.20x = 732,945.60 × 471,235.20
  4. Step 4: Simplify right side
    488,515.20x = 345,389,766,405.12
  5. Step 5: Solve for x
    x = 345,389,766,405.12/488,515.20
  6. Step 6: Final answer
    x = 707,019.49

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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.