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Finding the Third Proportional to 621,155 and 1,330,885

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Solution

The third proportional to 621,155 and 1,330,885 is: 2,851,550.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,155 : 1,330,885 = 1,330,885 : x
  2. Step 2: Convert to fraction form
    621,155/1,330,885 = 1,330,885/x
  3. Step 3: Cross multiply
    621,155x = 1,330,885 × 1,330,885
  4. Step 4: Simplify right side
    621,155x = 1,771,254,883,225
  5. Step 5: Solve for x
    x = 1,771,254,883,225/621,155
  6. Step 6: Final answer
    x = 2,851,550.55

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.