Home / 825,387.72-1,238,358.54-319,965.18

Finding the Fourth Proportional to 825,387.72, 1,238,358.54 and 319,965.18

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Solution

The fourth proportional to 825,387.72, 1,238,358.54 and 319,965.18 is: 480,055.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,387.72 : 1,238,358.54 = 319,965.18 : x
  2. Step 2: Convert to fraction form
    825,387.72/1,238,358.54 = 319,965.18/x
  3. Step 3: Cross multiply
    825,387.72x = 1,238,358.54 × 319,965.18
  4. Step 4: Simplify right side
    825,387.72x = 396,231,613,155.64
  5. Step 5: Solve for x
    x = 396,231,613,155.64/825,387.72
  6. Step 6: Final answer
    x = 480,055.13

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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.