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Finding the Third Proportional to 672,669 and 999,423

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Solution

The third proportional to 672,669 and 999,423 is: 1,484,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,669 : 999,423 = 999,423 : x
  2. Step 2: Convert to fraction form
    672,669/999,423 = 999,423/x
  3. Step 3: Cross multiply
    672,669x = 999,423 × 999,423
  4. Step 4: Simplify right side
    672,669x = 998,846,332,929
  5. Step 5: Solve for x
    x = 998,846,332,929/672,669
  6. Step 6: Final answer
    x = 1,484,900.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.