Home / 512,784,101.40-769,157,489.70-205,992,907.80

Finding the Fourth Proportional to 512,784,101.40, 769,157,489.70 and 205,992,907.80

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Solution

The fourth proportional to 512,784,101.40, 769,157,489.70 and 205,992,907.80 is: 308,981,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,784,101.40 : 769,157,489.70 = 205,992,907.80 : x
  2. Step 2: Convert to fraction form
    512,784,101.40/769,157,489.70 = 205,992,907.80/x
  3. Step 3: Cross multiply
    512,784,101.40x = 769,157,489.70 × 205,992,907.80
  4. Step 4: Simplify right side
    512,784,101.40x = 158,440,987,859,451,584
  5. Step 5: Solve for x
    x = 158,440,987,859,451,584/512,784,101.40
  6. Step 6: Final answer
    x = 308,981,864.74

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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.