Home / 512,784,105.90-769,157,496.45-205,992,912.30

Finding the Fourth Proportional to 512,784,105.90, 769,157,496.45 and 205,992,912.30

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Solution

The fourth proportional to 512,784,105.90, 769,157,496.45 and 205,992,912.30 is: 308,981,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,784,105.90 : 769,157,496.45 = 205,992,912.30 : x
  2. Step 2: Convert to fraction form
    512,784,105.90/769,157,496.45 = 205,992,912.30/x
  3. Step 3: Cross multiply
    512,784,105.90x = 769,157,496.45 × 205,992,912.30
  4. Step 4: Simplify right side
    512,784,105.90x = 158,440,992,711,112,416
  5. Step 5: Solve for x
    x = 158,440,992,711,112,416/512,784,105.90
  6. Step 6: Final answer
    x = 308,981,871.49

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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.