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Finding the Fourth Proportional to 488,458.20, 732,687.30 and 429,409.20

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Solution

The fourth proportional to 488,458.20, 732,687.30 and 429,409.20 is: 644,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,458.20 : 732,687.30 = 429,409.20 : x
  2. Step 2: Convert to fraction form
    488,458.20/732,687.30 = 429,409.20/x
  3. Step 3: Cross multiply
    488,458.20x = 732,687.30 × 429,409.20
  4. Step 4: Simplify right side
    488,458.20x = 314,622,667,343.16
  5. Step 5: Solve for x
    x = 314,622,667,343.16/488,458.20
  6. Step 6: Final answer
    x = 644,113.80

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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.