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Finding the Third Proportional to 990,977 and 2,171,278

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Solution

The third proportional to 990,977 and 2,171,278 is: 4,757,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,977 : 2,171,278 = 2,171,278 : x
  2. Step 2: Convert to fraction form
    990,977/2,171,278 = 2,171,278/x
  3. Step 3: Cross multiply
    990,977x = 2,171,278 × 2,171,278
  4. Step 4: Simplify right side
    990,977x = 4,714,448,153,284
  5. Step 5: Solve for x
    x = 4,714,448,153,284/990,977
  6. Step 6: Final answer
    x = 4,757,373.94

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.