Home / 664,795.30-996,512.55-327,316.90

Finding the Fourth Proportional to 664,795.30, 996,512.55 and 327,316.90

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Solution

The fourth proportional to 664,795.30, 996,512.55 and 327,316.90 is: 490,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,795.30 : 996,512.55 = 327,316.90 : x
  2. Step 2: Convert to fraction form
    664,795.30/996,512.55 = 327,316.90/x
  3. Step 3: Cross multiply
    664,795.30x = 996,512.55 × 327,316.90
  4. Step 4: Simplify right side
    664,795.30x = 326,175,398,677.10
  5. Step 5: Solve for x
    x = 326,175,398,677.10/664,795.30
  6. Step 6: Final answer
    x = 490,640.35

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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.