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Finding the Third Proportional to 800,312 and 1,220,795

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Solution

The third proportional to 800,312 and 1,220,795 is: 1,862,199.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,312 : 1,220,795 = 1,220,795 : x
  2. Step 2: Convert to fraction form
    800,312/1,220,795 = 1,220,795/x
  3. Step 3: Cross multiply
    800,312x = 1,220,795 × 1,220,795
  4. Step 4: Simplify right side
    800,312x = 1,490,340,432,025
  5. Step 5: Solve for x
    x = 1,490,340,432,025/800,312
  6. Step 6: Final answer
    x = 1,862,199.28

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.