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Finding the Fourth Proportional to 2,645,297.82, 3,965,137.25 and 1,682,725.21

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Solution

The fourth proportional to 2,645,297.82, 3,965,137.25 and 1,682,725.21 is: 2,522,300.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645,297.82 : 3,965,137.25 = 1,682,725.21 : x
  2. Step 2: Convert to fraction form
    2,645,297.82/3,965,137.25 = 1,682,725.21/x
  3. Step 3: Cross multiply
    2,645,297.82x = 3,965,137.25 × 1,682,725.21
  4. Step 4: Simplify right side
    2,645,297.82x = 6,672,236,393,358.60
  5. Step 5: Solve for x
    x = 6,672,236,393,358.60/2,645,297.82
  6. Step 6: Final answer
    x = 2,522,300.64

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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.