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Finding the Third Proportional to 642,611 and 1,395,844.50

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Solution

The third proportional to 642,611 and 1,395,844.50 is: 3,031,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,611 : 1,395,844.50 = 1,395,844.50 : x
  2. Step 2: Convert to fraction form
    642,611/1,395,844.50 = 1,395,844.50/x
  3. Step 3: Cross multiply
    642,611x = 1,395,844.50 × 1,395,844.50
  4. Step 4: Simplify right side
    642,611x = 1,948,381,868,180.25
  5. Step 5: Solve for x
    x = 1,948,381,868,180.25/642,611
  6. Step 6: Final answer
    x = 3,031,977.15

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.