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Finding the Third Proportional to 3,520,999.25 and 7,420,281.06

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Solution

The third proportional to 3,520,999.25 and 7,420,281.06 is: 15,637,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520,999.25 : 7,420,281.06 = 7,420,281.06 : x
  2. Step 2: Convert to fraction form
    3,520,999.25/7,420,281.06 = 7,420,281.06/x
  3. Step 3: Cross multiply
    3,520,999.25x = 7,420,281.06 × 7,420,281.06
  4. Step 4: Simplify right side
    3,520,999.25x = 55,060,571,046,496.12
  5. Step 5: Solve for x
    x = 55,060,571,046,496.12/3,520,999.25
  6. Step 6: Final answer
    x = 15,637,768.47

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.