Home / 408,566.13-612,947.59-128,083.38

Finding the Fourth Proportional to 408,566.13, 612,947.59 and 128,083.38

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Solution

The fourth proportional to 408,566.13, 612,947.59 and 128,083.38 is: 192,155.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,566.13 : 612,947.59 = 128,083.38 : x
  2. Step 2: Convert to fraction form
    408,566.13/612,947.59 = 128,083.38/x
  3. Step 3: Cross multiply
    408,566.13x = 612,947.59 × 128,083.38
  4. Step 4: Simplify right side
    408,566.13x = 78,508,396,471.29
  5. Step 5: Solve for x
    x = 78,508,396,471.29/408,566.13
  6. Step 6: Final answer
    x = 192,155.91

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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.