Home / 1,275,906,821-1,760,752,121.46-689,195,962.76

Finding the Fourth Proportional to 1,275,906,821, 1,760,752,121.46 and 689,195,962.76

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Solution

The fourth proportional to 1,275,906,821, 1,760,752,121.46 and 689,195,962.76 is: 951,090,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,906,821 : 1,760,752,121.46 = 689,195,962.76 : x
  2. Step 2: Convert to fraction form
    1,275,906,821/1,760,752,121.46 = 689,195,962.76/x
  3. Step 3: Cross multiply
    1,275,906,821x = 1,760,752,121.46 × 689,195,962.76
  4. Step 4: Simplify right side
    1,275,906,821x = 1,213,503,253,531,337,216
  5. Step 5: Solve for x
    x = 1,213,503,253,531,337,216/1,275,906,821
  6. Step 6: Final answer
    x = 951,090,811.30

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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.