Home / 439,545.10-659,317.65-408,052.30

Finding the Fourth Proportional to 439,545.10, 659,317.65 and 408,052.30

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Solution

The fourth proportional to 439,545.10, 659,317.65 and 408,052.30 is: 612,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,545.10 : 659,317.65 = 408,052.30 : x
  2. Step 2: Convert to fraction form
    439,545.10/659,317.65 = 408,052.30/x
  3. Step 3: Cross multiply
    439,545.10x = 659,317.65 × 408,052.30
  4. Step 4: Simplify right side
    439,545.10x = 269,036,083,513.10
  5. Step 5: Solve for x
    x = 269,036,083,513.10/439,545.10
  6. Step 6: Final answer
    x = 612,078.45

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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.