Home / 815,433.60-1,223,344.80-394,363.20

Finding the Fourth Proportional to 815,433.60, 1,223,344.80 and 394,363.20

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Solution

The fourth proportional to 815,433.60, 1,223,344.80 and 394,363.20 is: 591,638.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,433.60 : 1,223,344.80 = 394,363.20 : x
  2. Step 2: Convert to fraction form
    815,433.60/1,223,344.80 = 394,363.20/x
  3. Step 3: Cross multiply
    815,433.60x = 1,223,344.80 × 394,363.20
  4. Step 4: Simplify right side
    815,433.60x = 482,442,170,031.36
  5. Step 5: Solve for x
    x = 482,442,170,031.36/815,433.60
  6. Step 6: Final answer
    x = 591,638.82

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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.