Home / 819,512,694.47-1,229,092,915.61-259,318,915.70

Finding the Fourth Proportional to 819,512,694.47, 1,229,092,915.61 and 259,318,915.70

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Solution

The fourth proportional to 819,512,694.47, 1,229,092,915.61 and 259,318,915.70 is: 388,922,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,512,694.47 : 1,229,092,915.61 = 259,318,915.70 : x
  2. Step 2: Convert to fraction form
    819,512,694.47/1,229,092,915.61 = 259,318,915.70/x
  3. Step 3: Cross multiply
    819,512,694.47x = 1,229,092,915.61 × 259,318,915.70
  4. Step 4: Simplify right side
    819,512,694.47x = 318,727,042,163,094,720
  5. Step 5: Solve for x
    x = 318,727,042,163,094,720/819,512,694.47
  6. Step 6: Final answer
    x = 388,922,641.85

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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.