Home / 782,380.80-1,173,571.20-427,201.07

Finding the Fourth Proportional to 782,380.80, 1,173,571.20 and 427,201.07

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Solution

The fourth proportional to 782,380.80, 1,173,571.20 and 427,201.07 is: 640,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,380.80 : 1,173,571.20 = 427,201.07 : x
  2. Step 2: Convert to fraction form
    782,380.80/1,173,571.20 = 427,201.07/x
  3. Step 3: Cross multiply
    782,380.80x = 1,173,571.20 × 427,201.07
  4. Step 4: Simplify right side
    782,380.80x = 501,350,866,493.33
  5. Step 5: Solve for x
    x = 501,350,866,493.33/782,380.80
  6. Step 6: Final answer
    x = 640,801.60

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Double scale
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Similar ratio
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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.