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Finding the Third Proportional to 342,676 and 742,556

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Solution

The third proportional to 342,676 and 742,556 is: 1,609,069.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,676 : 742,556 = 742,556 : x
  2. Step 2: Convert to fraction form
    342,676/742,556 = 742,556/x
  3. Step 3: Cross multiply
    342,676x = 742,556 × 742,556
  4. Step 4: Simplify right side
    342,676x = 551,389,413,136
  5. Step 5: Solve for x
    x = 551,389,413,136/342,676
  6. Step 6: Final answer
    x = 1,609,069.25

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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.