Home / 728,078.57-1,091,260.06-328,251.23

Finding the Fourth Proportional to 728,078.57, 1,091,260.06 and 328,251.23

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Solution

The fourth proportional to 728,078.57, 1,091,260.06 and 328,251.23 is: 491,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,078.57 : 1,091,260.06 = 328,251.23 : x
  2. Step 2: Convert to fraction form
    728,078.57/1,091,260.06 = 328,251.23/x
  3. Step 3: Cross multiply
    728,078.57x = 1,091,260.06 × 328,251.23
  4. Step 4: Simplify right side
    728,078.57x = 358,207,450,667.95
  5. Step 5: Solve for x
    x = 358,207,450,667.95/728,078.57
  6. Step 6: Final answer
    x = 491,990.11

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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.