Home / 412,245,321.40-618,367,982.10-347,675,239.90

Finding the Fourth Proportional to 412,245,321.40, 618,367,982.10 and 347,675,239.90

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Solution

The fourth proportional to 412,245,321.40, 618,367,982.10 and 347,675,239.90 is: 521,512,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,245,321.40 : 618,367,982.10 = 347,675,239.90 : x
  2. Step 2: Convert to fraction form
    412,245,321.40/618,367,982.10 = 347,675,239.90/x
  3. Step 3: Cross multiply
    412,245,321.40x = 618,367,982.10 × 347,675,239.90
  4. Step 4: Simplify right side
    412,245,321.40x = 214,991,236,523,096,384
  5. Step 5: Solve for x
    x = 214,991,236,523,096,384/412,245,321.40
  6. Step 6: Final answer
    x = 521,512,859.85

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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.