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Finding the Fourth Proportional to 664,225.80, 996,338.70 and 327,318.45

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Solution

The fourth proportional to 664,225.80, 996,338.70 and 327,318.45 is: 490,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,225.80 : 996,338.70 = 327,318.45 : x
  2. Step 2: Convert to fraction form
    664,225.80/996,338.70 = 327,318.45/x
  3. Step 3: Cross multiply
    664,225.80x = 996,338.70 × 327,318.45
  4. Step 4: Simplify right side
    664,225.80x = 326,120,038,959.02
  5. Step 5: Solve for x
    x = 326,120,038,959.02/664,225.80
  6. Step 6: Final answer
    x = 490,977.68

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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.