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Finding the Third Proportional to 403,772 and 626,979

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Solution

The third proportional to 403,772 and 626,979 is: 973,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,772 : 626,979 = 626,979 : x
  2. Step 2: Convert to fraction form
    403,772/626,979 = 626,979/x
  3. Step 3: Cross multiply
    403,772x = 626,979 × 626,979
  4. Step 4: Simplify right side
    403,772x = 393,102,666,441
  5. Step 5: Solve for x
    x = 393,102,666,441/403,772
  6. Step 6: Final answer
    x = 973,575.85

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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.