Home / 812,741,651.39-1,121,676,519.86-455,605,885.97

Finding the Fourth Proportional to 812,741,651.39, 1,121,676,519.86 and 455,605,885.97

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Solution

The fourth proportional to 812,741,651.39, 1,121,676,519.86 and 455,605,885.97 is: 628,788,279.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,741,651.39 : 1,121,676,519.86 = 455,605,885.97 : x
  2. Step 2: Convert to fraction form
    812,741,651.39/1,121,676,519.86 = 455,605,885.97/x
  3. Step 3: Cross multiply
    812,741,651.39x = 1,121,676,519.86 × 455,605,885.97
  4. Step 4: Simplify right side
    812,741,651.39x = 511,042,424,598,881,472
  5. Step 5: Solve for x
    x = 511,042,424,598,881,472/812,741,651.39
  6. Step 6: Final answer
    x = 628,788,279.43

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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.