Home / 812,523.46-1,218,038.73-279,917.86

Finding the Fourth Proportional to 812,523.46, 1,218,038.73 and 279,917.86

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Solution

The fourth proportional to 812,523.46, 1,218,038.73 and 279,917.86 is: 419,619.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,523.46 : 1,218,038.73 = 279,917.86 : x
  2. Step 2: Convert to fraction form
    812,523.46/1,218,038.73 = 279,917.86/x
  3. Step 3: Cross multiply
    812,523.46x = 1,218,038.73 × 279,917.86
  4. Step 4: Simplify right side
    812,523.46x = 340,950,794,698.72
  5. Step 5: Solve for x
    x = 340,950,794,698.72/812,523.46
  6. Step 6: Final answer
    x = 419,619.63

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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.