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Finding the Third Proportional to 388,419.75 and 847,451.25

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Solution

The third proportional to 388,419.75 and 847,451.25 is: 1,848,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,419.75 : 847,451.25 = 847,451.25 : x
  2. Step 2: Convert to fraction form
    388,419.75/847,451.25 = 847,451.25/x
  3. Step 3: Cross multiply
    388,419.75x = 847,451.25 × 847,451.25
  4. Step 4: Simplify right side
    388,419.75x = 718,173,621,126.56
  5. Step 5: Solve for x
    x = 718,173,621,126.56/388,419.75
  6. Step 6: Final answer
    x = 1,848,962.68

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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.