Home / 855,919.80-1,283,945.31-256,837.32

Finding the Fourth Proportional to 855,919.80, 1,283,945.31 and 256,837.32

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Solution

The fourth proportional to 855,919.80, 1,283,945.31 and 256,837.32 is: 385,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,919.80 : 1,283,945.31 = 256,837.32 : x
  2. Step 2: Convert to fraction form
    855,919.80/1,283,945.31 = 256,837.32/x
  3. Step 3: Cross multiply
    855,919.80x = 1,283,945.31 × 256,837.32
  4. Step 4: Simplify right side
    855,919.80x = 329,765,072,446.97
  5. Step 5: Solve for x
    x = 329,765,072,446.97/855,919.80
  6. Step 6: Final answer
    x = 385,275.67

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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.