Home / 843,640.80-1,265,572.20-311,535.60

Finding the Fourth Proportional to 843,640.80, 1,265,572.20 and 311,535.60

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Solution

The fourth proportional to 843,640.80, 1,265,572.20 and 311,535.60 is: 467,344.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,640.80 : 1,265,572.20 = 311,535.60 : x
  2. Step 2: Convert to fraction form
    843,640.80/1,265,572.20 = 311,535.60/x
  3. Step 3: Cross multiply
    843,640.80x = 1,265,572.20 × 311,535.60
  4. Step 4: Simplify right side
    843,640.80x = 394,270,794,670.32
  5. Step 5: Solve for x
    x = 394,270,794,670.32/843,640.80
  6. Step 6: Final answer
    x = 467,344.39

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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.