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Finding the Third Proportional to 403,746 and 626,940

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Solution

The third proportional to 403,746 and 626,940 is: 973,517.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,746 : 626,940 = 626,940 : x
  2. Step 2: Convert to fraction form
    403,746/626,940 = 626,940/x
  3. Step 3: Cross multiply
    403,746x = 626,940 × 626,940
  4. Step 4: Simplify right side
    403,746x = 393,053,763,600
  5. Step 5: Solve for x
    x = 393,053,763,600/403,746
  6. Step 6: Final answer
    x = 973,517.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.