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Finding the Third Proportional to 403,074 and 878,724

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Solution

The third proportional to 403,074 and 878,724 is: 1,915,667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,074 : 878,724 = 878,724 : x
  2. Step 2: Convert to fraction form
    403,074/878,724 = 878,724/x
  3. Step 3: Cross multiply
    403,074x = 878,724 × 878,724
  4. Step 4: Simplify right side
    403,074x = 772,155,868,176
  5. Step 5: Solve for x
    x = 772,155,868,176/403,074
  6. Step 6: Final answer
    x = 1,915,667.76

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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.