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Finding the Third Proportional to 720,409 and 1,567,666

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Solution

The third proportional to 720,409 and 1,567,666 is: 3,411,363.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,409 : 1,567,666 = 1,567,666 : x
  2. Step 2: Convert to fraction form
    720,409/1,567,666 = 1,567,666/x
  3. Step 3: Cross multiply
    720,409x = 1,567,666 × 1,567,666
  4. Step 4: Simplify right side
    720,409x = 2,457,576,687,556
  5. Step 5: Solve for x
    x = 2,457,576,687,556/720,409
  6. Step 6: Final answer
    x = 3,411,363.11

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.