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Finding the Fourth Proportional to 887,613.72, 1,331,289.36 and 326,517

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Solution

The fourth proportional to 887,613.72, 1,331,289.36 and 326,517 is: 489,727.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,613.72 : 1,331,289.36 = 326,517 : x
  2. Step 2: Convert to fraction form
    887,613.72/1,331,289.36 = 326,517/x
  3. Step 3: Cross multiply
    887,613.72x = 1,331,289.36 × 326,517
  4. Step 4: Simplify right side
    887,613.72x = 434,688,607,959.12
  5. Step 5: Solve for x
    x = 434,688,607,959.12/887,613.72
  6. Step 6: Final answer
    x = 489,727.23

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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.