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Finding the Third Proportional to 186,946 and 407,728

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Solution

The third proportional to 186,946 and 407,728 is: 889,252.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,946 : 407,728 = 407,728 : x
  2. Step 2: Convert to fraction form
    186,946/407,728 = 407,728/x
  3. Step 3: Cross multiply
    186,946x = 407,728 × 407,728
  4. Step 4: Simplify right side
    186,946x = 166,242,121,984
  5. Step 5: Solve for x
    x = 166,242,121,984/186,946
  6. Step 6: Final answer
    x = 889,252.09

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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.