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Finding the Third Proportional to 988,153 and 2,157,018

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Solution

The third proportional to 988,153 and 2,157,018 is: 4,708,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,153 : 2,157,018 = 2,157,018 : x
  2. Step 2: Convert to fraction form
    988,153/2,157,018 = 2,157,018/x
  3. Step 3: Cross multiply
    988,153x = 2,157,018 × 2,157,018
  4. Step 4: Simplify right side
    988,153x = 4,652,726,652,324
  5. Step 5: Solve for x
    x = 4,652,726,652,324/988,153
  6. Step 6: Final answer
    x = 4,708,508.35

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.