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Finding the Third Proportional to 317,394 and 491,763

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Solution

The third proportional to 317,394 and 491,763 is: 761,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,394 : 491,763 = 491,763 : x
  2. Step 2: Convert to fraction form
    317,394/491,763 = 491,763/x
  3. Step 3: Cross multiply
    317,394x = 491,763 × 491,763
  4. Step 4: Simplify right side
    317,394x = 241,830,848,169
  5. Step 5: Solve for x
    x = 241,830,848,169/317,394
  6. Step 6: Final answer
    x = 761,926.34

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.