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Finding the Third Proportional to 913,881 and 1,980,149

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Solution

The third proportional to 913,881 and 1,980,149 is: 4,290,482.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,881 : 1,980,149 = 1,980,149 : x
  2. Step 2: Convert to fraction form
    913,881/1,980,149 = 1,980,149/x
  3. Step 3: Cross multiply
    913,881x = 1,980,149 × 1,980,149
  4. Step 4: Simplify right side
    913,881x = 3,920,990,062,201
  5. Step 5: Solve for x
    x = 3,920,990,062,201/913,881
  6. Step 6: Final answer
    x = 4,290,482.09

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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.