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Finding the Fourth Proportional to 547,481.90, 755,509.66 and 305,757.38

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Solution

The fourth proportional to 547,481.90, 755,509.66 and 305,757.38 is: 421,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,481.90 : 755,509.66 = 305,757.38 : x
  2. Step 2: Convert to fraction form
    547,481.90/755,509.66 = 305,757.38/x
  3. Step 3: Cross multiply
    547,481.90x = 755,509.66 × 305,757.38
  4. Step 4: Simplify right side
    547,481.90x = 231,002,649,664.35
  5. Step 5: Solve for x
    x = 231,002,649,664.35/547,481.90
  6. Step 6: Final answer
    x = 421,936.60

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1.5x scale

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.