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Finding the Third Proportional to 878,634 and 1,918,377

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Solution

The third proportional to 878,634 and 1,918,377 is: 4,188,513.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,634 : 1,918,377 = 1,918,377 : x
  2. Step 2: Convert to fraction form
    878,634/1,918,377 = 1,918,377/x
  3. Step 3: Cross multiply
    878,634x = 1,918,377 × 1,918,377
  4. Step 4: Simplify right side
    878,634x = 3,680,170,314,129
  5. Step 5: Solve for x
    x = 3,680,170,314,129/878,634
  6. Step 6: Final answer
    x = 4,188,513.44

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.