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Finding the Third Proportional to 643,701 and 1,370,562

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Solution

The third proportional to 643,701 and 1,370,562 is: 2,918,187.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,701 : 1,370,562 = 1,370,562 : x
  2. Step 2: Convert to fraction form
    643,701/1,370,562 = 1,370,562/x
  3. Step 3: Cross multiply
    643,701x = 1,370,562 × 1,370,562
  4. Step 4: Simplify right side
    643,701x = 1,878,440,195,844
  5. Step 5: Solve for x
    x = 1,878,440,195,844/643,701
  6. Step 6: Final answer
    x = 2,918,187.47

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.