Home / 1,275,906,820-1,760,752,120.08-689,195,961.76

Finding the Fourth Proportional to 1,275,906,820, 1,760,752,120.08 and 689,195,961.76

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Solution

The fourth proportional to 1,275,906,820, 1,760,752,120.08 and 689,195,961.76 is: 951,090,809.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,906,820 : 1,760,752,120.08 = 689,195,961.76 : x
  2. Step 2: Convert to fraction form
    1,275,906,820/1,760,752,120.08 = 689,195,961.76/x
  3. Step 3: Cross multiply
    1,275,906,820x = 1,760,752,120.08 × 689,195,961.76
  4. Step 4: Simplify right side
    1,275,906,820x = 1,213,503,250,819,494,656
  5. Step 5: Solve for x
    x = 1,213,503,250,819,494,656/1,275,906,820
  6. Step 6: Final answer
    x = 951,090,809.92

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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.