Home / 1,189,900.83-1,785,560.40-431,801.45

Finding the Fourth Proportional to 1,189,900.83, 1,785,560.40 and 431,801.45

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Solution

The fourth proportional to 1,189,900.83, 1,785,560.40 and 431,801.45 is: 647,959.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,900.83 : 1,785,560.40 = 431,801.45 : x
  2. Step 2: Convert to fraction form
    1,189,900.83/1,785,560.40 = 431,801.45/x
  3. Step 3: Cross multiply
    1,189,900.83x = 1,785,560.40 × 431,801.45
  4. Step 4: Simplify right side
    1,189,900.83x = 771,007,560,854.78
  5. Step 5: Solve for x
    x = 771,007,560,854.78/1,189,900.83
  6. Step 6: Final answer
    x = 647,959.51

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Half scale
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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.