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Finding the Third Proportional to 558,921 and 790,104

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Solution

The third proportional to 558,921 and 790,104 is: 1,116,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,921 : 790,104 = 790,104 : x
  2. Step 2: Convert to fraction form
    558,921/790,104 = 790,104/x
  3. Step 3: Cross multiply
    558,921x = 790,104 × 790,104
  4. Step 4: Simplify right side
    558,921x = 624,264,330,816
  5. Step 5: Solve for x
    x = 624,264,330,816/558,921
  6. Step 6: Final answer
    x = 1,116,909.78

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.