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Finding the Third Proportional to 403,108 and 879,900

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Solution

The third proportional to 403,108 and 879,900 is: 1,920,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,108 : 879,900 = 879,900 : x
  2. Step 2: Convert to fraction form
    403,108/879,900 = 879,900/x
  3. Step 3: Cross multiply
    403,108x = 879,900 × 879,900
  4. Step 4: Simplify right side
    403,108x = 774,224,010,000
  5. Step 5: Solve for x
    x = 774,224,010,000/403,108
  6. Step 6: Final answer
    x = 1,920,636.68

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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.