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Finding the Fourth Proportional to 664,991.10, 996,830.55 and 327,755.70

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Solution

The fourth proportional to 664,991.10, 996,830.55 and 327,755.70 is: 491,310.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,991.10 : 996,830.55 = 327,755.70 : x
  2. Step 2: Convert to fraction form
    664,991.10/996,830.55 = 327,755.70/x
  3. Step 3: Cross multiply
    664,991.10x = 996,830.55 × 327,755.70
  4. Step 4: Simplify right side
    664,991.10x = 326,716,894,696.64
  5. Step 5: Solve for x
    x = 326,716,894,696.64/664,991.10
  6. Step 6: Final answer
    x = 491,310.18

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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.