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Finding the Third Proportional to 988,890 and 2,154,036

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Solution

The third proportional to 988,890 and 2,154,036 is: 4,691,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,890 : 2,154,036 = 2,154,036 : x
  2. Step 2: Convert to fraction form
    988,890/2,154,036 = 2,154,036/x
  3. Step 3: Cross multiply
    988,890x = 2,154,036 × 2,154,036
  4. Step 4: Simplify right side
    988,890x = 4,639,871,089,296
  5. Step 5: Solve for x
    x = 4,639,871,089,296/988,890
  6. Step 6: Final answer
    x = 4,691,999.20

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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.