Home / 812,258.07-1,218,370.76-279,767.31

Finding the Fourth Proportional to 812,258.07, 1,218,370.76 and 279,767.31

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Solution

The fourth proportional to 812,258.07, 1,218,370.76 and 279,767.31 is: 419,645.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,258.07 : 1,218,370.76 = 279,767.31 : x
  2. Step 2: Convert to fraction form
    812,258.07/1,218,370.76 = 279,767.31/x
  3. Step 3: Cross multiply
    812,258.07x = 1,218,370.76 × 279,767.31
  4. Step 4: Simplify right side
    812,258.07x = 340,860,311,754.95
  5. Step 5: Solve for x
    x = 340,860,311,754.95/812,258.07
  6. Step 6: Final answer
    x = 419,645.34

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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.