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Finding the Third Proportional to 422,210 and 631,206

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Solution

The third proportional to 422,210 and 631,206 is: 943,656.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,210 : 631,206 = 631,206 : x
  2. Step 2: Convert to fraction form
    422,210/631,206 = 631,206/x
  3. Step 3: Cross multiply
    422,210x = 631,206 × 631,206
  4. Step 4: Simplify right side
    422,210x = 398,421,014,436
  5. Step 5: Solve for x
    x = 398,421,014,436/422,210
  6. Step 6: Final answer
    x = 943,656.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.