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Finding the Third Proportional to 291,560 and 631,480

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Solution

The third proportional to 291,560 and 631,480 is: 1,367,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,560 : 631,480 = 631,480 : x
  2. Step 2: Convert to fraction form
    291,560/631,480 = 631,480/x
  3. Step 3: Cross multiply
    291,560x = 631,480 × 631,480
  4. Step 4: Simplify right side
    291,560x = 398,766,990,400
  5. Step 5: Solve for x
    x = 398,766,990,400/291,560
  6. Step 6: Final answer
    x = 1,367,701.30

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.