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Finding the Fourth Proportional to 664,232.60, 996,348.90 and 609,120.20

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Solution

The fourth proportional to 664,232.60, 996,348.90 and 609,120.20 is: 913,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,232.60 : 996,348.90 = 609,120.20 : x
  2. Step 2: Convert to fraction form
    664,232.60/996,348.90 = 609,120.20/x
  3. Step 3: Cross multiply
    664,232.60x = 996,348.90 × 609,120.20
  4. Step 4: Simplify right side
    664,232.60x = 606,896,241,237.78
  5. Step 5: Solve for x
    x = 606,896,241,237.78/664,232.60
  6. Step 6: Final answer
    x = 913,680.30

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Double scale
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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.