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Finding the Fourth Proportional to 409,663.60, 613,458.60 and 326,719.60

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Solution

The fourth proportional to 409,663.60, 613,458.60 and 326,719.60 is: 489,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,663.60 : 613,458.60 = 326,719.60 : x
  2. Step 2: Convert to fraction form
    409,663.60/613,458.60 = 326,719.60/x
  3. Step 3: Cross multiply
    409,663.60x = 613,458.60 × 326,719.60
  4. Step 4: Simplify right side
    409,663.60x = 200,428,948,408.56
  5. Step 5: Solve for x
    x = 200,428,948,408.56/409,663.60
  6. Step 6: Final answer
    x = 489,252.52

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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.