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Finding the Third Proportional to 418,140 and 916,344

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Solution

The third proportional to 418,140 and 916,344 is: 2,008,146.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,140 : 916,344 = 916,344 : x
  2. Step 2: Convert to fraction form
    418,140/916,344 = 916,344/x
  3. Step 3: Cross multiply
    418,140x = 916,344 × 916,344
  4. Step 4: Simplify right side
    418,140x = 839,686,326,336
  5. Step 5: Solve for x
    x = 839,686,326,336/418,140
  6. Step 6: Final answer
    x = 2,008,146.38

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.