Home / 556,924,906.72-768,511,378.56-321,990,707.44

Finding the Fourth Proportional to 556,924,906.72, 768,511,378.56 and 321,990,707.44

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Solution

The fourth proportional to 556,924,906.72, 768,511,378.56 and 321,990,707.44 is: 444,321,163.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,924,906.72 : 768,511,378.56 = 321,990,707.44 : x
  2. Step 2: Convert to fraction form
    556,924,906.72/768,511,378.56 = 321,990,707.44/x
  3. Step 3: Cross multiply
    556,924,906.72x = 768,511,378.56 × 321,990,707.44
  4. Step 4: Simplify right side
    556,924,906.72x = 247,453,522,458,224,032
  5. Step 5: Solve for x
    x = 247,453,522,458,224,032/556,924,906.72
  6. Step 6: Final answer
    x = 444,321,163.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.