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Finding the Third Proportional to 978,015.75 and 2,118,821.25

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Solution

The third proportional to 978,015.75 and 2,118,821.25 is: 4,590,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,015.75 : 2,118,821.25 = 2,118,821.25 : x
  2. Step 2: Convert to fraction form
    978,015.75/2,118,821.25 = 2,118,821.25/x
  3. Step 3: Cross multiply
    978,015.75x = 2,118,821.25 × 2,118,821.25
  4. Step 4: Simplify right side
    978,015.75x = 4,489,403,489,451.56
  5. Step 5: Solve for x
    x = 4,489,403,489,451.56/978,015.75
  6. Step 6: Final answer
    x = 4,590,318.19

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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.