Home / 811,446.11-1,217,279.90-338,020.75

Finding the Fourth Proportional to 811,446.11, 1,217,279.90 and 338,020.75

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Solution

The fourth proportional to 811,446.11, 1,217,279.90 and 338,020.75 is: 507,077.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,446.11 : 1,217,279.90 = 338,020.75 : x
  2. Step 2: Convert to fraction form
    811,446.11/1,217,279.90 = 338,020.75/x
  3. Step 3: Cross multiply
    811,446.11x = 1,217,279.90 × 338,020.75
  4. Step 4: Simplify right side
    811,446.11x = 411,465,864,757.93
  5. Step 5: Solve for x
    x = 411,465,864,757.93/811,446.11
  6. Step 6: Final answer
    x = 507,077.25

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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.