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Finding the Fourth Proportional to 664,503.10, 996,900.45 and 327,705.10

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Solution

The fourth proportional to 664,503.10, 996,900.45 and 327,705.10 is: 491,629.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,503.10 : 996,900.45 = 327,705.10 : x
  2. Step 2: Convert to fraction form
    664,503.10/996,900.45 = 327,705.10/x
  3. Step 3: Cross multiply
    664,503.10x = 996,900.45 × 327,705.10
  4. Step 4: Simplify right side
    664,503.10x = 326,689,361,657.30
  5. Step 5: Solve for x
    x = 326,689,361,657.30/664,503.10
  6. Step 6: Final answer
    x = 491,629.55

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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.