Home / 812,517,759.45-1,218,392,439.77-314,761,409.73

Finding the Fourth Proportional to 812,517,759.45, 1,218,392,439.77 and 314,761,409.73

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Solution

The fourth proportional to 812,517,759.45, 1,218,392,439.77 and 314,761,409.73 is: 471,993,279.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,517,759.45 : 1,218,392,439.77 = 314,761,409.73 : x
  2. Step 2: Convert to fraction form
    812,517,759.45/1,218,392,439.77 = 314,761,409.73/x
  3. Step 3: Cross multiply
    812,517,759.45x = 1,218,392,439.77 × 314,761,409.73
  4. Step 4: Simplify right side
    812,517,759.45x = 383,502,921,938,713,600
  5. Step 5: Solve for x
    x = 383,502,921,938,713,600/812,517,759.45
  6. Step 6: Final answer
    x = 471,993,279.51

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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.