Home / 1,275,906,824-1,760,752,125.60-689,195,965.76

Finding the Fourth Proportional to 1,275,906,824, 1,760,752,125.60 and 689,195,965.76

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Solution

The fourth proportional to 1,275,906,824, 1,760,752,125.60 and 689,195,965.76 is: 951,090,815.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,906,824 : 1,760,752,125.60 = 689,195,965.76 : x
  2. Step 2: Convert to fraction form
    1,275,906,824/1,760,752,125.60 = 689,195,965.76/x
  3. Step 3: Cross multiply
    1,275,906,824x = 1,760,752,125.60 × 689,195,965.76
  4. Step 4: Simplify right side
    1,275,906,824x = 1,213,503,261,666,864,640
  5. Step 5: Solve for x
    x = 1,213,503,261,666,864,640/1,275,906,824
  6. Step 6: Final answer
    x = 951,090,815.44

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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.