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Finding the Third Proportional to 403,419.75 and 877,816.50

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Solution

The third proportional to 403,419.75 and 877,816.50 is: 1,910,074.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,419.75 : 877,816.50 = 877,816.50 : x
  2. Step 2: Convert to fraction form
    403,419.75/877,816.50 = 877,816.50/x
  3. Step 3: Cross multiply
    403,419.75x = 877,816.50 × 877,816.50
  4. Step 4: Simplify right side
    403,419.75x = 770,561,807,672.25
  5. Step 5: Solve for x
    x = 770,561,807,672.25/403,419.75
  6. Step 6: Final answer
    x = 1,910,074.58

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.