Home / 812,908.87-1,219,635.51-265,826.51

Finding the Fourth Proportional to 812,908.87, 1,219,635.51 and 265,826.51

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Solution

The fourth proportional to 812,908.87, 1,219,635.51 and 265,826.51 is: 398,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,908.87 : 1,219,635.51 = 265,826.51 : x
  2. Step 2: Convert to fraction form
    812,908.87/1,219,635.51 = 265,826.51/x
  3. Step 3: Cross multiply
    812,908.87x = 1,219,635.51 × 265,826.51
  4. Step 4: Simplify right side
    812,908.87x = 324,211,451,095.37
  5. Step 5: Solve for x
    x = 324,211,451,095.37/812,908.87
  6. Step 6: Final answer
    x = 398,828.78

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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.