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Finding the Fourth Proportional to 887,616.72, 1,331,293.86 and 326,520

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Solution

The fourth proportional to 887,616.72, 1,331,293.86 and 326,520 is: 489,731.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,616.72 : 1,331,293.86 = 326,520 : x
  2. Step 2: Convert to fraction form
    887,616.72/1,331,293.86 = 326,520/x
  3. Step 3: Cross multiply
    887,616.72x = 1,331,293.86 × 326,520
  4. Step 4: Simplify right side
    887,616.72x = 434,694,071,167.20
  5. Step 5: Solve for x
    x = 434,694,071,167.20/887,616.72
  6. Step 6: Final answer
    x = 489,731.73

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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.