Home / 12,961,918,376.76-17,890,324,963.80-7,880,202,511.80

Finding the Fourth Proportional to 12,961,918,376.76, 17,890,324,963.80 and 7,880,202,511.80

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Solution

The fourth proportional to 12,961,918,376.76, 17,890,324,963.80 and 7,880,202,511.80 is: 10,876,428,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961,918,376.76 : 17,890,324,963.80 = 7,880,202,511.80 : x
  2. Step 2: Convert to fraction form
    12,961,918,376.76/17,890,324,963.80 = 7,880,202,511.80/x
  3. Step 3: Cross multiply
    12,961,918,376.76x = 17,890,324,963.80 × 7,880,202,511.80
  4. Step 4: Simplify right side
    12,961,918,376.76x = 140,979,383,716,655,005,696
  5. Step 5: Solve for x
    x = 140,979,383,716,655,005,696/12,961,918,376.76
  6. Step 6: Final answer
    x = 10,876,428,906.50

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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.