Home / 1,278,498,768.41-1,917,834,757.82-449,351,606.09

Finding the Fourth Proportional to 1,278,498,768.41, 1,917,834,757.82 and 449,351,606.09

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Solution

The fourth proportional to 1,278,498,768.41, 1,917,834,757.82 and 449,351,606.09 is: 674,057,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,498,768.41 : 1,917,834,757.82 = 449,351,606.09 : x
  2. Step 2: Convert to fraction form
    1,278,498,768.41/1,917,834,757.82 = 449,351,606.09/x
  3. Step 3: Cross multiply
    1,278,498,768.41x = 1,917,834,757.82 × 449,351,606.09
  4. Step 4: Simplify right side
    1,278,498,768.41x = 861,782,128,629,807,232
  5. Step 5: Solve for x
    x = 861,782,128,629,807,232/1,278,498,768.41
  6. Step 6: Final answer
    x = 674,057,848.10

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Double scale
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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.