Home / 447,144.30-617,612.90-324,439.78

Finding the Fourth Proportional to 447,144.30, 617,612.90 and 324,439.78

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Solution

The fourth proportional to 447,144.30, 617,612.90 and 324,439.78 is: 448,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,144.30 : 617,612.90 = 324,439.78 : x
  2. Step 2: Convert to fraction form
    447,144.30/617,612.90 = 324,439.78/x
  3. Step 3: Cross multiply
    447,144.30x = 617,612.90 × 324,439.78
  4. Step 4: Simplify right side
    447,144.30x = 200,378,193,217.93
  5. Step 5: Solve for x
    x = 200,378,193,217.93/447,144.30
  6. Step 6: Final answer
    x = 448,128.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.