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Finding the Fourth Proportional to 619,892.20, 929,708.70 and 264,917.80

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Solution

The fourth proportional to 619,892.20, 929,708.70 and 264,917.80 is: 397,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,892.20 : 929,708.70 = 264,917.80 : x
  2. Step 2: Convert to fraction form
    619,892.20/929,708.70 = 264,917.80/x
  3. Step 3: Cross multiply
    619,892.20x = 929,708.70 × 264,917.80
  4. Step 4: Simplify right side
    619,892.20x = 246,296,383,444.86
  5. Step 5: Solve for x
    x = 246,296,383,444.86/619,892.20
  6. Step 6: Final answer
    x = 397,321.31

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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.