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Finding the Fourth Proportional to 664,187.60, 996,427.20 and 327,389.60

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Solution

The fourth proportional to 664,187.60, 996,427.20 and 327,389.60 is: 491,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,187.60 : 996,427.20 = 327,389.60 : x
  2. Step 2: Convert to fraction form
    664,187.60/996,427.20 = 327,389.60/x
  3. Step 3: Cross multiply
    664,187.60x = 996,427.20 × 327,389.60
  4. Step 4: Simplify right side
    664,187.60x = 326,219,902,437.12
  5. Step 5: Solve for x
    x = 326,219,902,437.12/664,187.60
  6. Step 6: Final answer
    x = 491,156.27

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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.