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Finding the Third Proportional to 297,130 and 640,464

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Solution

The third proportional to 297,130 and 640,464 is: 1,380,520.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,130 : 640,464 = 640,464 : x
  2. Step 2: Convert to fraction form
    297,130/640,464 = 640,464/x
  3. Step 3: Cross multiply
    297,130x = 640,464 × 640,464
  4. Step 4: Simplify right side
    297,130x = 410,194,135,296
  5. Step 5: Solve for x
    x = 410,194,135,296/297,130
  6. Step 6: Final answer
    x = 1,380,520.77

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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.