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Finding the Third Proportional to 294,669 and 643,307

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Solution

The third proportional to 294,669 and 643,307 is: 1,404,436.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,669 : 643,307 = 643,307 : x
  2. Step 2: Convert to fraction form
    294,669/643,307 = 643,307/x
  3. Step 3: Cross multiply
    294,669x = 643,307 × 643,307
  4. Step 4: Simplify right side
    294,669x = 413,843,896,249
  5. Step 5: Solve for x
    x = 413,843,896,249/294,669
  6. Step 6: Final answer
    x = 1,404,436.49

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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.