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Finding the Third Proportional to 294,684 and 643,341

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Solution

The third proportional to 294,684 and 643,341 is: 1,404,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,684 : 643,341 = 643,341 : x
  2. Step 2: Convert to fraction form
    294,684/643,341 = 643,341/x
  3. Step 3: Cross multiply
    294,684x = 643,341 × 643,341
  4. Step 4: Simplify right side
    294,684x = 413,887,642,281
  5. Step 5: Solve for x
    x = 413,887,642,281/294,684
  6. Step 6: Final answer
    x = 1,404,513.45

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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.