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Finding the Third Proportional to 303,470 and 664,990

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Solution

The third proportional to 303,470 and 664,990 is: 1,457,184.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,470 : 664,990 = 664,990 : x
  2. Step 2: Convert to fraction form
    303,470/664,990 = 664,990/x
  3. Step 3: Cross multiply
    303,470x = 664,990 × 664,990
  4. Step 4: Simplify right side
    303,470x = 442,211,700,100
  5. Step 5: Solve for x
    x = 442,211,700,100/303,470
  6. Step 6: Final answer
    x = 1,457,184.24

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.