Home / 826,247.80-1,239,371.70-542,812.60

Finding the Fourth Proportional to 826,247.80, 1,239,371.70 and 542,812.60

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Solution

The fourth proportional to 826,247.80, 1,239,371.70 and 542,812.60 is: 814,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,247.80 : 1,239,371.70 = 542,812.60 : x
  2. Step 2: Convert to fraction form
    826,247.80/1,239,371.70 = 542,812.60/x
  3. Step 3: Cross multiply
    826,247.80x = 1,239,371.70 × 542,812.60
  4. Step 4: Simplify right side
    826,247.80x = 672,746,574,843.42
  5. Step 5: Solve for x
    x = 672,746,574,843.42/826,247.80
  6. Step 6: Final answer
    x = 814,218.90

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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.