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Finding the Fourth Proportional to 664,295.80, 995,763.30 and 326,817.40

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Solution

The fourth proportional to 664,295.80, 995,763.30 and 326,817.40 is: 489,891.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,295.80 : 995,763.30 = 326,817.40 : x
  2. Step 2: Convert to fraction form
    664,295.80/995,763.30 = 326,817.40/x
  3. Step 3: Cross multiply
    664,295.80x = 995,763.30 × 326,817.40
  4. Step 4: Simplify right side
    664,295.80x = 325,432,772,721.42
  5. Step 5: Solve for x
    x = 325,432,772,721.42/664,295.80
  6. Step 6: Final answer
    x = 489,891.36

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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.