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Finding the Third Proportional to 403,760 and 626,942

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Solution

The third proportional to 403,760 and 626,942 is: 973,489.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,760 : 626,942 = 626,942 : x
  2. Step 2: Convert to fraction form
    403,760/626,942 = 626,942/x
  3. Step 3: Cross multiply
    403,760x = 626,942 × 626,942
  4. Step 4: Simplify right side
    403,760x = 393,056,271,364
  5. Step 5: Solve for x
    x = 393,056,271,364/403,760
  6. Step 6: Final answer
    x = 973,489.87

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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.