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Finding the Third Proportional to 300,058 and 640,292

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Solution

The third proportional to 300,058 and 640,292 is: 1,366,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,058 : 640,292 = 640,292 : x
  2. Step 2: Convert to fraction form
    300,058/640,292 = 640,292/x
  3. Step 3: Cross multiply
    300,058x = 640,292 × 640,292
  4. Step 4: Simplify right side
    300,058x = 409,973,845,264
  5. Step 5: Solve for x
    x = 409,973,845,264/300,058
  6. Step 6: Final answer
    x = 1,366,315.33

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.