Home / 639,741,351.78-959,647,923.63-179,643,648.42

Finding the Fourth Proportional to 639,741,351.78, 959,647,923.63 and 179,643,648.42

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Solution

The fourth proportional to 639,741,351.78, 959,647,923.63 and 179,643,648.42 is: 269,475,552.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,741,351.78 : 959,647,923.63 = 179,643,648.42 : x
  2. Step 2: Convert to fraction form
    639,741,351.78/959,647,923.63 = 179,643,648.42/x
  3. Step 3: Cross multiply
    639,741,351.78x = 959,647,923.63 × 179,643,648.42
  4. Step 4: Simplify right side
    639,741,351.78x = 172,394,654,199,570,720
  5. Step 5: Solve for x
    x = 172,394,654,199,570,720/639,741,351.78
  6. Step 6: Final answer
    x = 269,475,552.46

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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.