Home / 1,121,959.71-1,682,939.56-280,511.46

Finding the Fourth Proportional to 1,121,959.71, 1,682,939.56 and 280,511.46

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Solution

The fourth proportional to 1,121,959.71, 1,682,939.56 and 280,511.46 is: 420,767.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,959.71 : 1,682,939.56 = 280,511.46 : x
  2. Step 2: Convert to fraction form
    1,121,959.71/1,682,939.56 = 280,511.46/x
  3. Step 3: Cross multiply
    1,121,959.71x = 1,682,939.56 × 280,511.46
  4. Step 4: Simplify right side
    1,121,959.71x = 472,083,833,067.36
  5. Step 5: Solve for x
    x = 472,083,833,067.36/1,121,959.71
  6. Step 6: Final answer
    x = 420,767.19

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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.