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Finding the Fourth Proportional to 664,272.30, 995,728.05 and 326,793.90

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Solution

The fourth proportional to 664,272.30, 995,728.05 and 326,793.90 is: 489,856.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,272.30 : 995,728.05 = 326,793.90 : x
  2. Step 2: Convert to fraction form
    664,272.30/995,728.05 = 326,793.90/x
  3. Step 3: Cross multiply
    664,272.30x = 995,728.05 × 326,793.90
  4. Step 4: Simplify right side
    664,272.30x = 325,397,852,798.90
  5. Step 5: Solve for x
    x = 325,397,852,798.90/664,272.30
  6. Step 6: Final answer
    x = 489,856.12

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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.