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Finding the Third Proportional to 387,079.50 and 836,438.25

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Solution

The third proportional to 387,079.50 and 836,438.25 is: 1,807,455.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,079.50 : 836,438.25 = 836,438.25 : x
  2. Step 2: Convert to fraction form
    387,079.50/836,438.25 = 836,438.25/x
  3. Step 3: Cross multiply
    387,079.50x = 836,438.25 × 836,438.25
  4. Step 4: Simplify right side
    387,079.50x = 699,628,946,063.06
  5. Step 5: Solve for x
    x = 699,628,946,063.06/387,079.50
  6. Step 6: Final answer
    x = 1,807,455.44

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.