Home / 421,419,977.44-631,842,655.84-213,757,958.25

Finding the Fourth Proportional to 421,419,977.44, 631,842,655.84 and 213,757,958.25

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Solution

The fourth proportional to 421,419,977.44, 631,842,655.84 and 213,757,958.25 is: 320,491,204.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,419,977.44 : 631,842,655.84 = 213,757,958.25 : x
  2. Step 2: Convert to fraction form
    421,419,977.44/631,842,655.84 = 213,757,958.25/x
  3. Step 3: Cross multiply
    421,419,977.44x = 631,842,655.84 × 213,757,958.25
  4. Step 4: Simplify right side
    421,419,977.44x = 135,061,396,049,195,456
  5. Step 5: Solve for x
    x = 135,061,396,049,195,456/421,419,977.44
  6. Step 6: Final answer
    x = 320,491,204.21

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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.