Home / 826,721.80-1,240,082.70-543,286.60

Finding the Fourth Proportional to 826,721.80, 1,240,082.70 and 543,286.60

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Solution

The fourth proportional to 826,721.80, 1,240,082.70 and 543,286.60 is: 814,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,721.80 : 1,240,082.70 = 543,286.60 : x
  2. Step 2: Convert to fraction form
    826,721.80/1,240,082.70 = 543,286.60/x
  3. Step 3: Cross multiply
    826,721.80x = 1,240,082.70 × 543,286.60
  4. Step 4: Simplify right side
    826,721.80x = 673,720,313,801.82
  5. Step 5: Solve for x
    x = 673,720,313,801.82/826,721.80
  6. Step 6: Final answer
    x = 814,929.90

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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.