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Finding the Third Proportional to 378,707 and 816,460

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Solution

The third proportional to 378,707 and 816,460 is: 1,760,218.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,707 : 816,460 = 816,460 : x
  2. Step 2: Convert to fraction form
    378,707/816,460 = 816,460/x
  3. Step 3: Cross multiply
    378,707x = 816,460 × 816,460
  4. Step 4: Simplify right side
    378,707x = 666,606,931,600
  5. Step 5: Solve for x
    x = 666,606,931,600/378,707
  6. Step 6: Final answer
    x = 1,760,218.14

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.