Home / 1,040,385.60-1,560,189.60-409,168.80

Finding the Fourth Proportional to 1,040,385.60, 1,560,189.60 and 409,168.80

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Solution

The fourth proportional to 1,040,385.60, 1,560,189.60 and 409,168.80 is: 613,600.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,385.60 : 1,560,189.60 = 409,168.80 : x
  2. Step 2: Convert to fraction form
    1,040,385.60/1,560,189.60 = 409,168.80/x
  3. Step 3: Cross multiply
    1,040,385.60x = 1,560,189.60 × 409,168.80
  4. Step 4: Simplify right side
    1,040,385.60x = 638,380,906,404.48
  5. Step 5: Solve for x
    x = 638,380,906,404.48/1,040,385.60
  6. Step 6: Final answer
    x = 613,600.29

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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.