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Finding the Fourth Proportional to 664,558.80, 996,157.80 and 327,080.40

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Solution

The fourth proportional to 664,558.80, 996,157.80 and 327,080.40 is: 490,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,558.80 : 996,157.80 = 327,080.40 : x
  2. Step 2: Convert to fraction form
    664,558.80/996,157.80 = 327,080.40/x
  3. Step 3: Cross multiply
    664,558.80x = 996,157.80 × 327,080.40
  4. Step 4: Simplify right side
    664,558.80x = 325,823,691,687.12
  5. Step 5: Solve for x
    x = 325,823,691,687.12/664,558.80
  6. Step 6: Final answer
    x = 490,285.72

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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.