Home / 825,987,469.32-1,238,972,805.90-212,569,311.24

Finding the Fourth Proportional to 825,987,469.32, 1,238,972,805.90 and 212,569,311.24

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Solution

The fourth proportional to 825,987,469.32, 1,238,972,805.90 and 212,569,311.24 is: 318,851,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,987,469.32 : 1,238,972,805.90 = 212,569,311.24 : x
  2. Step 2: Convert to fraction form
    825,987,469.32/1,238,972,805.90 = 212,569,311.24/x
  3. Step 3: Cross multiply
    825,987,469.32x = 1,238,972,805.90 × 212,569,311.24
  4. Step 4: Simplify right side
    825,987,469.32x = 263,367,595,995,253,248
  5. Step 5: Solve for x
    x = 263,367,595,995,253,248/825,987,469.32
  6. Step 6: Final answer
    x = 318,851,805.60

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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.