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Finding the Third Proportional to 391,153.50 and 818,574.75

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Solution

The third proportional to 391,153.50 and 818,574.75 is: 1,713,047.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,153.50 : 818,574.75 = 818,574.75 : x
  2. Step 2: Convert to fraction form
    391,153.50/818,574.75 = 818,574.75/x
  3. Step 3: Cross multiply
    391,153.50x = 818,574.75 × 818,574.75
  4. Step 4: Simplify right side
    391,153.50x = 670,064,621,337.56
  5. Step 5: Solve for x
    x = 670,064,621,337.56/391,153.50
  6. Step 6: Final answer
    x = 1,713,047.75

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These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.