Home / 815,857.28-1,223,601.12-310,238

Finding the Fourth Proportional to 815,857.28, 1,223,601.12 and 310,238

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Solution

The fourth proportional to 815,857.28, 1,223,601.12 and 310,238 is: 465,286.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,857.28 : 1,223,601.12 = 310,238 : x
  2. Step 2: Convert to fraction form
    815,857.28/1,223,601.12 = 310,238/x
  3. Step 3: Cross multiply
    815,857.28x = 1,223,601.12 × 310,238
  4. Step 4: Simplify right side
    815,857.28x = 379,607,564,266.56
  5. Step 5: Solve for x
    x = 379,607,564,266.56/815,857.28
  6. Step 6: Final answer
    x = 465,286.73

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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.