Home / 639,741,258.78-959,647,784.13-179,643,555.42

Finding the Fourth Proportional to 639,741,258.78, 959,647,784.13 and 179,643,555.42

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Solution

The fourth proportional to 639,741,258.78, 959,647,784.13 and 179,643,555.42 is: 269,475,412.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,741,258.78 : 959,647,784.13 = 179,643,555.42 : x
  2. Step 2: Convert to fraction form
    639,741,258.78/959,647,784.13 = 179,643,555.42/x
  3. Step 3: Cross multiply
    639,741,258.78x = 959,647,784.13 × 179,643,555.42
  4. Step 4: Simplify right side
    639,741,258.78x = 172,394,539,892,037,824
  5. Step 5: Solve for x
    x = 172,394,539,892,037,824/639,741,258.78
  6. Step 6: Final answer
    x = 269,475,412.95

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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.