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Finding the Third Proportional to 621,829 and 1,318,390

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Solution

The third proportional to 621,829 and 1,318,390 is: 2,795,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,829 : 1,318,390 = 1,318,390 : x
  2. Step 2: Convert to fraction form
    621,829/1,318,390 = 1,318,390/x
  3. Step 3: Cross multiply
    621,829x = 1,318,390 × 1,318,390
  4. Step 4: Simplify right side
    621,829x = 1,738,152,192,100
  5. Step 5: Solve for x
    x = 1,738,152,192,100/621,829
  6. Step 6: Final answer
    x = 2,795,225.36

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.