Home / 512,422,343.80-768,633,515.70-487,340,078.20

Finding the Fourth Proportional to 512,422,343.80, 768,633,515.70 and 487,340,078.20

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Solution

The fourth proportional to 512,422,343.80, 768,633,515.70 and 487,340,078.20 is: 731,010,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,422,343.80 : 768,633,515.70 = 487,340,078.20 : x
  2. Step 2: Convert to fraction form
    512,422,343.80/768,633,515.70 = 487,340,078.20/x
  3. Step 3: Cross multiply
    512,422,343.80x = 768,633,515.70 × 487,340,078.20
  4. Step 4: Simplify right side
    512,422,343.80x = 374,585,917,648,378,944
  5. Step 5: Solve for x
    x = 374,585,917,648,378,944/512,422,343.80
  6. Step 6: Final answer
    x = 731,010,117.30

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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.