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Finding the Third Proportional to 317,590 and 681,228

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Solution

The third proportional to 317,590 and 681,228 is: 1,461,228.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,590 : 681,228 = 681,228 : x
  2. Step 2: Convert to fraction form
    317,590/681,228 = 681,228/x
  3. Step 3: Cross multiply
    317,590x = 681,228 × 681,228
  4. Step 4: Simplify right side
    317,590x = 464,071,587,984
  5. Step 5: Solve for x
    x = 464,071,587,984/317,590
  6. Step 6: Final answer
    x = 1,461,228.59

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.