Home / 1,040,128.40-1,560,192.60-409,062.80

Finding the Fourth Proportional to 1,040,128.40, 1,560,192.60 and 409,062.80

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Solution

The fourth proportional to 1,040,128.40, 1,560,192.60 and 409,062.80 is: 613,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,128.40 : 1,560,192.60 = 409,062.80 : x
  2. Step 2: Convert to fraction form
    1,040,128.40/1,560,192.60 = 409,062.80/x
  3. Step 3: Cross multiply
    1,040,128.40x = 1,560,192.60 × 409,062.80
  4. Step 4: Simplify right side
    1,040,128.40x = 638,216,753,495.28
  5. Step 5: Solve for x
    x = 638,216,753,495.28/1,040,128.40
  6. Step 6: Final answer
    x = 613,594.20

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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.