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Finding the Third Proportional to 401,776 and 622,110

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Solution

The third proportional to 401,776 and 622,110 is: 963,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,776 : 622,110 = 622,110 : x
  2. Step 2: Convert to fraction form
    401,776/622,110 = 622,110/x
  3. Step 3: Cross multiply
    401,776x = 622,110 × 622,110
  4. Step 4: Simplify right side
    401,776x = 387,020,852,100
  5. Step 5: Solve for x
    x = 387,020,852,100/401,776
  6. Step 6: Final answer
    x = 963,275.19

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.