Home / 693,418,987.52-1,040,486,082.24-324,991,369.28

Finding the Fourth Proportional to 693,418,987.52, 1,040,486,082.24 and 324,991,369.28

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Solution

The fourth proportional to 693,418,987.52, 1,040,486,082.24 and 324,991,369.28 is: 487,654,654.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,418,987.52 : 1,040,486,082.24 = 324,991,369.28 : x
  2. Step 2: Convert to fraction form
    693,418,987.52/1,040,486,082.24 = 324,991,369.28/x
  3. Step 3: Cross multiply
    693,418,987.52x = 1,040,486,082.24 × 324,991,369.28
  4. Step 4: Simplify right side
    693,418,987.52x = 338,148,996,583,960,256
  5. Step 5: Solve for x
    x = 338,148,996,583,960,256/693,418,987.52
  6. Step 6: Final answer
    x = 487,654,654.21

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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.