Home / 811,974.60-1,217,006.76-331,906.32

Finding the Fourth Proportional to 811,974.60, 1,217,006.76 and 331,906.32

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Solution

The fourth proportional to 811,974.60, 1,217,006.76 and 331,906.32 is: 497,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,974.60 : 1,217,006.76 = 331,906.32 : x
  2. Step 2: Convert to fraction form
    811,974.60/1,217,006.76 = 331,906.32/x
  3. Step 3: Cross multiply
    811,974.60x = 1,217,006.76 × 331,906.32
  4. Step 4: Simplify right side
    811,974.60x = 403,932,235,126.72
  5. Step 5: Solve for x
    x = 403,932,235,126.72/811,974.60
  6. Step 6: Final answer
    x = 497,469.05

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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.