Home / 825,643.20-1,238,464.80-327,007.20

Finding the Fourth Proportional to 825,643.20, 1,238,464.80 and 327,007.20

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Solution

The fourth proportional to 825,643.20, 1,238,464.80 and 327,007.20 is: 490,510.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,643.20 : 1,238,464.80 = 327,007.20 : x
  2. Step 2: Convert to fraction form
    825,643.20/1,238,464.80 = 327,007.20/x
  3. Step 3: Cross multiply
    825,643.20x = 1,238,464.80 × 327,007.20
  4. Step 4: Simplify right side
    825,643.20x = 404,986,906,546.56
  5. Step 5: Solve for x
    x = 404,986,906,546.56/825,643.20
  6. Step 6: Final answer
    x = 490,510.80

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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.