Home / 1,519,253,885.80-2,278,561,959.78-428,481,862.12

Finding the Fourth Proportional to 1,519,253,885.80, 2,278,561,959.78 and 428,481,862.12

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Solution

The fourth proportional to 1,519,253,885.80, 2,278,561,959.78 and 428,481,862.12 is: 642,632,861.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519,253,885.80 : 2,278,561,959.78 = 428,481,862.12 : x
  2. Step 2: Convert to fraction form
    1,519,253,885.80/2,278,561,959.78 = 428,481,862.12/x
  3. Step 3: Cross multiply
    1,519,253,885.80x = 2,278,561,959.78 × 428,481,862.12
  4. Step 4: Simplify right side
    1,519,253,885.80x = 976,322,471,482,331,008
  5. Step 5: Solve for x
    x = 976,322,471,482,331,008/1,519,253,885.80
  6. Step 6: Final answer
    x = 642,632,861.17

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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.