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Finding the Fourth Proportional to 664,172.60, 996,404.70 and 327,374.60

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Solution

The fourth proportional to 664,172.60, 996,404.70 and 327,374.60 is: 491,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,172.60 : 996,404.70 = 327,374.60 : x
  2. Step 2: Convert to fraction form
    664,172.60/996,404.70 = 327,374.60/x
  3. Step 3: Cross multiply
    664,172.60x = 996,404.70 × 327,374.60
  4. Step 4: Simplify right side
    664,172.60x = 326,197,590,100.62
  5. Step 5: Solve for x
    x = 326,197,590,100.62/664,172.60
  6. Step 6: Final answer
    x = 491,133.77

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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.