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Finding the Third Proportional to 728,015 and 1,102,205

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Solution

The third proportional to 728,015 and 1,102,205 is: 1,668,723.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,015 : 1,102,205 = 1,102,205 : x
  2. Step 2: Convert to fraction form
    728,015/1,102,205 = 1,102,205/x
  3. Step 3: Cross multiply
    728,015x = 1,102,205 × 1,102,205
  4. Step 4: Simplify right side
    728,015x = 1,214,855,862,025
  5. Step 5: Solve for x
    x = 1,214,855,862,025/728,015
  6. Step 6: Final answer
    x = 1,668,723.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.