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Finding the Third Proportional to 677,457.42 and 990,745.17

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Solution

The third proportional to 677,457.42 and 990,745.17 is: 1,448,911.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,457.42 : 990,745.17 = 990,745.17 : x
  2. Step 2: Convert to fraction form
    677,457.42/990,745.17 = 990,745.17/x
  3. Step 3: Cross multiply
    677,457.42x = 990,745.17 × 990,745.17
  4. Step 4: Simplify right side
    677,457.42x = 981,575,995,593.62
  5. Step 5: Solve for x
    x = 981,575,995,593.62/677,457.42
  6. Step 6: Final answer
    x = 1,448,911.72

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.