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Finding the Third Proportional to 291,518 and 637,036

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Solution

The third proportional to 291,518 and 637,036 is: 1,392,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,518 : 637,036 = 637,036 : x
  2. Step 2: Convert to fraction form
    291,518/637,036 = 637,036/x
  3. Step 3: Cross multiply
    291,518x = 637,036 × 637,036
  4. Step 4: Simplify right side
    291,518x = 405,814,865,296
  5. Step 5: Solve for x
    x = 405,814,865,296/291,518
  6. Step 6: Final answer
    x = 1,392,074.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.