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Finding the Third Proportional to 338,429 and 505,942

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Solution

The third proportional to 338,429 and 505,942 is: 756,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,429 : 505,942 = 505,942 : x
  2. Step 2: Convert to fraction form
    338,429/505,942 = 505,942/x
  3. Step 3: Cross multiply
    338,429x = 505,942 × 505,942
  4. Step 4: Simplify right side
    338,429x = 255,977,307,364
  5. Step 5: Solve for x
    x = 255,977,307,364/338,429
  6. Step 6: Final answer
    x = 756,369.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.