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Finding the Third Proportional to 300,858.75 and 620,784

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Solution

The third proportional to 300,858.75 and 620,784 is: 1,280,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,858.75 : 620,784 = 620,784 : x
  2. Step 2: Convert to fraction form
    300,858.75/620,784 = 620,784/x
  3. Step 3: Cross multiply
    300,858.75x = 620,784 × 620,784
  4. Step 4: Simplify right side
    300,858.75x = 385,372,774,656
  5. Step 5: Solve for x
    x = 385,372,774,656/300,858.75
  6. Step 6: Final answer
    x = 1,280,909.31

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.