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Finding the Third Proportional to 403,158 and 847,689

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Solution

The third proportional to 403,158 and 847,689 is: 1,782,369.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,158 : 847,689 = 847,689 : x
  2. Step 2: Convert to fraction form
    403,158/847,689 = 847,689/x
  3. Step 3: Cross multiply
    403,158x = 847,689 × 847,689
  4. Step 4: Simplify right side
    403,158x = 718,576,640,721
  5. Step 5: Solve for x
    x = 718,576,640,721/403,158
  6. Step 6: Final answer
    x = 1,782,369.79

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.