Home / 512,418,255.40-768,726,915.90-221,284,815.40

Finding the Fourth Proportional to 512,418,255.40, 768,726,915.90 and 221,284,815.40

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Solution

The fourth proportional to 512,418,255.40, 768,726,915.90 and 221,284,815.40 is: 331,970,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,418,255.40 : 768,726,915.90 = 221,284,815.40 : x
  2. Step 2: Convert to fraction form
    512,418,255.40/768,726,915.90 = 221,284,815.40/x
  3. Step 3: Cross multiply
    512,418,255.40x = 768,726,915.90 × 221,284,815.40
  4. Step 4: Simplify right side
    512,418,255.40x = 170,107,593,677,942,816
  5. Step 5: Solve for x
    x = 170,107,593,677,942,816/512,418,255.40
  6. Step 6: Final answer
    x = 331,970,205.76

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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.