Home / 1,040,147.80-1,560,221.70-830,195.80

Finding the Fourth Proportional to 1,040,147.80, 1,560,221.70 and 830,195.80

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Solution

The fourth proportional to 1,040,147.80, 1,560,221.70 and 830,195.80 is: 1,245,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,147.80 : 1,560,221.70 = 830,195.80 : x
  2. Step 2: Convert to fraction form
    1,040,147.80/1,560,221.70 = 830,195.80/x
  3. Step 3: Cross multiply
    1,040,147.80x = 1,560,221.70 × 830,195.80
  4. Step 4: Simplify right side
    1,040,147.80x = 1,295,289,502,408.86
  5. Step 5: Solve for x
    x = 1,295,289,502,408.86/1,040,147.80
  6. Step 6: Final answer
    x = 1,245,293.70

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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.