Home / 1,189,901.08-1,785,560.78-431,801.70

Finding the Fourth Proportional to 1,189,901.08, 1,785,560.78 and 431,801.70

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Solution

The fourth proportional to 1,189,901.08, 1,785,560.78 and 431,801.70 is: 647,959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,901.08 : 1,785,560.78 = 431,801.70 : x
  2. Step 2: Convert to fraction form
    1,189,901.08/1,785,560.78 = 431,801.70/x
  3. Step 3: Cross multiply
    1,189,901.08x = 1,785,560.78 × 431,801.70
  4. Step 4: Simplify right side
    1,189,901.08x = 771,008,180,257.33
  5. Step 5: Solve for x
    x = 771,008,180,257.33/1,189,901.08
  6. Step 6: Final answer
    x = 647,959.90

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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.