Home / 823,921.60-1,235,882.40-263,012.80

Finding the Fourth Proportional to 823,921.60, 1,235,882.40 and 263,012.80

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Solution

The fourth proportional to 823,921.60, 1,235,882.40 and 263,012.80 is: 394,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,921.60 : 1,235,882.40 = 263,012.80 : x
  2. Step 2: Convert to fraction form
    823,921.60/1,235,882.40 = 263,012.80/x
  3. Step 3: Cross multiply
    823,921.60x = 1,235,882.40 × 263,012.80
  4. Step 4: Simplify right side
    823,921.60x = 325,052,890,494.72
  5. Step 5: Solve for x
    x = 325,052,890,494.72/823,921.60
  6. Step 6: Final answer
    x = 394,519.20

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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.