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Finding the Fourth Proportional to 664,478.80, 996,037.80 and 327,000.40

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Solution

The fourth proportional to 664,478.80, 996,037.80 and 327,000.40 is: 490,165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,478.80 : 996,037.80 = 327,000.40 : x
  2. Step 2: Convert to fraction form
    664,478.80/996,037.80 = 327,000.40/x
  3. Step 3: Cross multiply
    664,478.80x = 996,037.80 × 327,000.40
  4. Step 4: Simplify right side
    664,478.80x = 325,704,759,015.12
  5. Step 5: Solve for x
    x = 325,704,759,015.12/664,478.80
  6. Step 6: Final answer
    x = 490,165.76

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1.5x scale

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.