Home / 2,143,844.78-3,215,767.20-647,936.78

Finding the Fourth Proportional to 2,143,844.78, 3,215,767.20 and 647,936.78

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Solution

The fourth proportional to 2,143,844.78, 3,215,767.20 and 647,936.78 is: 971,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143,844.78 : 3,215,767.20 = 647,936.78 : x
  2. Step 2: Convert to fraction form
    2,143,844.78/3,215,767.20 = 647,936.78/x
  3. Step 3: Cross multiply
    2,143,844.78x = 3,215,767.20 × 647,936.78
  4. Step 4: Simplify right side
    2,143,844.78x = 2,083,613,844,797.62
  5. Step 5: Solve for x
    x = 2,083,613,844,797.62/2,143,844.78
  6. Step 6: Final answer
    x = 971,905.18

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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.