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Finding the Fourth Proportional to 483,669,781.80, 725,504,672.70 and 289,481,240.40

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Solution

The fourth proportional to 483,669,781.80, 725,504,672.70 and 289,481,240.40 is: 434,221,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,669,781.80 : 725,504,672.70 = 289,481,240.40 : x
  2. Step 2: Convert to fraction form
    483,669,781.80/725,504,672.70 = 289,481,240.40/x
  3. Step 3: Cross multiply
    483,669,781.80x = 725,504,672.70 × 289,481,240.40
  4. Step 4: Simplify right side
    483,669,781.80x = 210,019,992,569,192,000
  5. Step 5: Solve for x
    x = 210,019,992,569,192,000/483,669,781.80
  6. Step 6: Final answer
    x = 434,221,860.60

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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.