Home / 491,631,893.76-678,443,987.44-268,608,775.80

Finding the Fourth Proportional to 491,631,893.76, 678,443,987.44 and 268,608,775.80

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Solution

The fourth proportional to 491,631,893.76, 678,443,987.44 and 268,608,775.80 is: 370,675,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,631,893.76 : 678,443,987.44 = 268,608,775.80 : x
  2. Step 2: Convert to fraction form
    491,631,893.76/678,443,987.44 = 268,608,775.80/x
  3. Step 3: Cross multiply
    491,631,893.76x = 678,443,987.44 × 268,608,775.80
  4. Step 4: Simplify right side
    491,631,893.76x = 182,236,008,915,128,992
  5. Step 5: Solve for x
    x = 182,236,008,915,128,992/491,631,893.76
  6. Step 6: Final answer
    x = 370,675,725.53

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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.