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Finding the Third Proportional to 987,015 and 2,143,158

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Solution

The third proportional to 987,015 and 2,143,158 is: 4,653,552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,015 : 2,143,158 = 2,143,158 : x
  2. Step 2: Convert to fraction form
    987,015/2,143,158 = 2,143,158/x
  3. Step 3: Cross multiply
    987,015x = 2,143,158 × 2,143,158
  4. Step 4: Simplify right side
    987,015x = 4,593,126,212,964
  5. Step 5: Solve for x
    x = 4,593,126,212,964/987,015
  6. Step 6: Final answer
    x = 4,653,552.59

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.