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Finding the Third Proportional to 668,409.75 and 1,391,899.50

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Solution

The third proportional to 668,409.75 and 1,391,899.50 is: 2,898,497.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,409.75 : 1,391,899.50 = 1,391,899.50 : x
  2. Step 2: Convert to fraction form
    668,409.75/1,391,899.50 = 1,391,899.50/x
  3. Step 3: Cross multiply
    668,409.75x = 1,391,899.50 × 1,391,899.50
  4. Step 4: Simplify right side
    668,409.75x = 1,937,384,218,100.25
  5. Step 5: Solve for x
    x = 1,937,384,218,100.25/668,409.75
  6. Step 6: Final answer
    x = 2,898,497.84

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.