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Finding the Fourth Proportional to 664,563.60, 996,991.20 and 327,765.60

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Solution

The fourth proportional to 664,563.60, 996,991.20 and 327,765.60 is: 491,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,563.60 : 996,991.20 = 327,765.60 : x
  2. Step 2: Convert to fraction form
    664,563.60/996,991.20 = 327,765.60/x
  3. Step 3: Cross multiply
    664,563.60x = 996,991.20 × 327,765.60
  4. Step 4: Simplify right side
    664,563.60x = 326,779,418,862.72
  5. Step 5: Solve for x
    x = 326,779,418,862.72/664,563.60
  6. Step 6: Final answer
    x = 491,720.31

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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.