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Finding the Third Proportional to 408,048 and 612,072

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Solution

The third proportional to 408,048 and 612,072 is: 918,108

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,048 : 612,072 = 612,072 : x
  2. Step 2: Convert to fraction form
    408,048/612,072 = 612,072/x
  3. Step 3: Cross multiply
    408,048x = 612,072 × 612,072
  4. Step 4: Simplify right side
    408,048x = 374,632,133,184
  5. Step 5: Solve for x
    x = 374,632,133,184/408,048
  6. Step 6: Final answer
    x = 918,108

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.