Home / 1,040,079.40-1,560,119.10-409,013.80

Finding the Fourth Proportional to 1,040,079.40, 1,560,119.10 and 409,013.80

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Solution

The fourth proportional to 1,040,079.40, 1,560,119.10 and 409,013.80 is: 613,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,079.40 : 1,560,119.10 = 409,013.80 : x
  2. Step 2: Convert to fraction form
    1,040,079.40/1,560,119.10 = 409,013.80/x
  3. Step 3: Cross multiply
    1,040,079.40x = 1,560,119.10 × 409,013.80
  4. Step 4: Simplify right side
    1,040,079.40x = 638,110,241,543.58
  5. Step 5: Solve for x
    x = 638,110,241,543.58/1,040,079.40
  6. Step 6: Final answer
    x = 613,520.70

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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.