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Finding the Fourth Proportional to 815,760.92, 1,223,672.08 and 310,227.64

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Solution

The fourth proportional to 815,760.92, 1,223,672.08 and 310,227.64 is: 465,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,760.92 : 1,223,672.08 = 310,227.64 : x
  2. Step 2: Convert to fraction form
    815,760.92/1,223,672.08 = 310,227.64/x
  3. Step 3: Cross multiply
    815,760.92x = 1,223,672.08 × 310,227.64
  4. Step 4: Simplify right side
    815,760.92x = 379,616,901,512.29
  5. Step 5: Solve for x
    x = 379,616,901,512.29/815,760.92
  6. Step 6: Final answer
    x = 465,353.13

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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.