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Finding the Fourth Proportional to 550,997.20, 825,475.20 and 313,634.80

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Solution

The fourth proportional to 550,997.20, 825,475.20 and 313,634.80 is: 469,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,997.20 : 825,475.20 = 313,634.80 : x
  2. Step 2: Convert to fraction form
    550,997.20/825,475.20 = 313,634.80/x
  3. Step 3: Cross multiply
    550,997.20x = 825,475.20 × 313,634.80
  4. Step 4: Simplify right side
    550,997.20x = 258,897,749,256.96
  5. Step 5: Solve for x
    x = 258,897,749,256.96/550,997.20
  6. Step 6: Final answer
    x = 469,871.26

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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.