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Finding the Third Proportional to 788,936 and 1,687,220

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Solution

The third proportional to 788,936 and 1,687,220 is: 3,608,291.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,936 : 1,687,220 = 1,687,220 : x
  2. Step 2: Convert to fraction form
    788,936/1,687,220 = 1,687,220/x
  3. Step 3: Cross multiply
    788,936x = 1,687,220 × 1,687,220
  4. Step 4: Simplify right side
    788,936x = 2,846,711,328,400
  5. Step 5: Solve for x
    x = 2,846,711,328,400/788,936
  6. Step 6: Final answer
    x = 3,608,291.84

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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.