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Finding the Third Proportional to 639,040 and 970,224

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Solution

The third proportional to 639,040 and 970,224 is: 1,473,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,040 : 970,224 = 970,224 : x
  2. Step 2: Convert to fraction form
    639,040/970,224 = 970,224/x
  3. Step 3: Cross multiply
    639,040x = 970,224 × 970,224
  4. Step 4: Simplify right side
    639,040x = 941,334,610,176
  5. Step 5: Solve for x
    x = 941,334,610,176/639,040
  6. Step 6: Final answer
    x = 1,473,044.90

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.