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Finding the Third Proportional to 978,043.50 and 2,100,705

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Solution

The third proportional to 978,043.50 and 2,100,705 is: 4,512,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,043.50 : 2,100,705 = 2,100,705 : x
  2. Step 2: Convert to fraction form
    978,043.50/2,100,705 = 2,100,705/x
  3. Step 3: Cross multiply
    978,043.50x = 2,100,705 × 2,100,705
  4. Step 4: Simplify right side
    978,043.50x = 4,412,961,497,025
  5. Step 5: Solve for x
    x = 4,412,961,497,025/978,043.50
  6. Step 6: Final answer
    x = 4,512,029.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.