Home / 782,375.54-1,173,563.31-427,195.80

Finding the Fourth Proportional to 782,375.54, 1,173,563.31 and 427,195.80

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Solution

The fourth proportional to 782,375.54, 1,173,563.31 and 427,195.80 is: 640,793.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,375.54 : 1,173,563.31 = 427,195.80 : x
  2. Step 2: Convert to fraction form
    782,375.54/1,173,563.31 = 427,195.80/x
  3. Step 3: Cross multiply
    782,375.54x = 1,173,563.31 × 427,195.80
  4. Step 4: Simplify right side
    782,375.54x = 501,341,317,066.10
  5. Step 5: Solve for x
    x = 501,341,317,066.10/782,375.54
  6. Step 6: Final answer
    x = 640,793.70

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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.