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Finding the Third Proportional to 987,008 and 2,143,138

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Solution

The third proportional to 987,008 and 2,143,138 is: 4,653,498.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,008 : 2,143,138 = 2,143,138 : x
  2. Step 2: Convert to fraction form
    987,008/2,143,138 = 2,143,138/x
  3. Step 3: Cross multiply
    987,008x = 2,143,138 × 2,143,138
  4. Step 4: Simplify right side
    987,008x = 4,593,040,487,044
  5. Step 5: Solve for x
    x = 4,593,040,487,044/987,008
  6. Step 6: Final answer
    x = 4,653,498.74

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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.