Home / 812,258.70-1,218,371.69-279,767.94

Finding the Fourth Proportional to 812,258.70, 1,218,371.69 and 279,767.94

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Solution

The fourth proportional to 812,258.70, 1,218,371.69 and 279,767.94 is: 419,646.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,258.70 : 1,218,371.69 = 279,767.94 : x
  2. Step 2: Convert to fraction form
    812,258.70/1,218,371.69 = 279,767.94/x
  3. Step 3: Cross multiply
    812,258.70x = 1,218,371.69 × 279,767.94
  4. Step 4: Simplify right side
    812,258.70x = 340,861,333,996.15
  5. Step 5: Solve for x
    x = 340,861,333,996.15/812,258.70
  6. Step 6: Final answer
    x = 419,646.27

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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.