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Finding the Fourth Proportional to 612,027.22, 919,590.81 and 387,493.24

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Solution

The fourth proportional to 612,027.22, 919,590.81 and 387,493.24 is: 582,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,027.22 : 919,590.81 = 387,493.24 : x
  2. Step 2: Convert to fraction form
    612,027.22/919,590.81 = 387,493.24/x
  3. Step 3: Cross multiply
    612,027.22x = 919,590.81 × 387,493.24
  4. Step 4: Simplify right side
    612,027.22x = 356,335,222,441.12
  5. Step 5: Solve for x
    x = 356,335,222,441.12/612,027.22
  6. Step 6: Final answer
    x = 582,221.20

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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.