Home / 815,301.28-1,223,168.80-282,821.46

Finding the Fourth Proportional to 815,301.28, 1,223,168.80 and 282,821.46

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Solution

The fourth proportional to 815,301.28, 1,223,168.80 and 282,821.46 is: 424,307.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,301.28 : 1,223,168.80 = 282,821.46 : x
  2. Step 2: Convert to fraction form
    815,301.28/1,223,168.80 = 282,821.46/x
  3. Step 3: Cross multiply
    815,301.28x = 1,223,168.80 × 282,821.46
  4. Step 4: Simplify right side
    815,301.28x = 345,938,381,078.80
  5. Step 5: Solve for x
    x = 345,938,381,078.80/815,301.28
  6. Step 6: Final answer
    x = 424,307.42

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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.