Home / 512,012,982.75-768,019,847.81-123,836,186.81

Finding the Fourth Proportional to 512,012,982.75, 768,019,847.81 and 123,836,186.81

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Solution

The fourth proportional to 512,012,982.75, 768,019,847.81 and 123,836,186.81 is: 185,754,370.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,012,982.75 : 768,019,847.81 = 123,836,186.81 : x
  2. Step 2: Convert to fraction form
    512,012,982.75/768,019,847.81 = 123,836,186.81/x
  3. Step 3: Cross multiply
    512,012,982.75x = 768,019,847.81 × 123,836,186.81
  4. Step 4: Simplify right side
    512,012,982.75x = 95,108,649,342,727,648
  5. Step 5: Solve for x
    x = 95,108,649,342,727,648/512,012,982.75
  6. Step 6: Final answer
    x = 185,754,370.59

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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.