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Finding the Fourth Proportional to 769,909, 1,062,481.30 and 425,768.08

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Solution

The fourth proportional to 769,909, 1,062,481.30 and 425,768.08 is: 587,563.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,909 : 1,062,481.30 = 425,768.08 : x
  2. Step 2: Convert to fraction form
    769,909/1,062,481.30 = 425,768.08/x
  3. Step 3: Cross multiply
    769,909x = 1,062,481.30 × 425,768.08
  4. Step 4: Simplify right side
    769,909x = 452,370,623,136.90
  5. Step 5: Solve for x
    x = 452,370,623,136.90/769,909
  6. Step 6: Final answer
    x = 587,563.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.