Home / 512,422,357.80-768,633,536.70-487,340,092.20

Finding the Fourth Proportional to 512,422,357.80, 768,633,536.70 and 487,340,092.20

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Solution

The fourth proportional to 512,422,357.80, 768,633,536.70 and 487,340,092.20 is: 731,010,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,422,357.80 : 768,633,536.70 = 487,340,092.20 : x
  2. Step 2: Convert to fraction form
    512,422,357.80/768,633,536.70 = 487,340,092.20/x
  3. Step 3: Cross multiply
    512,422,357.80x = 768,633,536.70 × 487,340,092.20
  4. Step 4: Simplify right side
    512,422,357.80x = 374,585,938,643,390,080
  5. Step 5: Solve for x
    x = 374,585,938,643,390,080/512,422,357.80
  6. Step 6: Final answer
    x = 731,010,138.30

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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.