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Finding the Fourth Proportional to 612,993.66, 919,481.25 and 275,796.18

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Solution

The fourth proportional to 612,993.66, 919,481.25 and 275,796.18 is: 413,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,993.66 : 919,481.25 = 275,796.18 : x
  2. Step 2: Convert to fraction form
    612,993.66/919,481.25 = 275,796.18/x
  3. Step 3: Cross multiply
    612,993.66x = 919,481.25 × 275,796.18
  4. Step 4: Simplify right side
    612,993.66x = 253,589,416,331.63
  5. Step 5: Solve for x
    x = 253,589,416,331.63/612,993.66
  6. Step 6: Final answer
    x = 413,690.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.