Home / 664,111.90-996,167.85-215,145.10

Finding the Fourth Proportional to 664,111.90, 996,167.85 and 215,145.10

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Solution

The fourth proportional to 664,111.90, 996,167.85 and 215,145.10 is: 322,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,111.90 : 996,167.85 = 215,145.10 : x
  2. Step 2: Convert to fraction form
    664,111.90/996,167.85 = 215,145.10/x
  3. Step 3: Cross multiply
    664,111.90x = 996,167.85 × 215,145.10
  4. Step 4: Simplify right side
    664,111.90x = 214,320,631,705.04
  5. Step 5: Solve for x
    x = 214,320,631,705.04/664,111.90
  6. Step 6: Final answer
    x = 322,717.65

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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.