Home / 843,620.80-1,265,542.20-311,515.60

Finding the Fourth Proportional to 843,620.80, 1,265,542.20 and 311,515.60

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Solution

The fourth proportional to 843,620.80, 1,265,542.20 and 311,515.60 is: 467,314.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,620.80 : 1,265,542.20 = 311,515.60 : x
  2. Step 2: Convert to fraction form
    843,620.80/1,265,542.20 = 311,515.60/x
  3. Step 3: Cross multiply
    843,620.80x = 1,265,542.20 × 311,515.60
  4. Step 4: Simplify right side
    843,620.80x = 394,236,137,758.32
  5. Step 5: Solve for x
    x = 394,236,137,758.32/843,620.80
  6. Step 6: Final answer
    x = 467,314.39

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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.