Home / 664,515.10-996,918.45-327,717.10

Finding the Fourth Proportional to 664,515.10, 996,918.45 and 327,717.10

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Solution

The fourth proportional to 664,515.10, 996,918.45 and 327,717.10 is: 491,647.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,515.10 : 996,918.45 = 327,717.10 : x
  2. Step 2: Convert to fraction form
    664,515.10/996,918.45 = 327,717.10/x
  3. Step 3: Cross multiply
    664,515.10x = 996,918.45 × 327,717.10
  4. Step 4: Simplify right side
    664,515.10x = 326,707,223,370.50
  5. Step 5: Solve for x
    x = 326,707,223,370.50/664,515.10
  6. Step 6: Final answer
    x = 491,647.55

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Half scale
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Double scale
Find fourth proportional to 664,516.10, 996,919.95 and 327,718.10
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.