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Finding the Third Proportional to 988,505 and 2,158,285

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Solution

The third proportional to 988,505 and 2,158,285 is: 4,712,362.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,505 : 2,158,285 = 2,158,285 : x
  2. Step 2: Convert to fraction form
    988,505/2,158,285 = 2,158,285/x
  3. Step 3: Cross multiply
    988,505x = 2,158,285 × 2,158,285
  4. Step 4: Simplify right side
    988,505x = 4,658,194,141,225
  5. Step 5: Solve for x
    x = 4,658,194,141,225/988,505
  6. Step 6: Final answer
    x = 4,712,362.75

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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.