Home / 855,932.36-1,284,111.75-256,904.60

Finding the Fourth Proportional to 855,932.36, 1,284,111.75 and 256,904.60

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Solution

The fourth proportional to 855,932.36, 1,284,111.75 and 256,904.60 is: 385,420.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,932.36 : 1,284,111.75 = 256,904.60 : x
  2. Step 2: Convert to fraction form
    855,932.36/1,284,111.75 = 256,904.60/x
  3. Step 3: Cross multiply
    855,932.36x = 1,284,111.75 × 256,904.60
  4. Step 4: Simplify right side
    855,932.36x = 329,894,215,489.05
  5. Step 5: Solve for x
    x = 329,894,215,489.05/855,932.36
  6. Step 6: Final answer
    x = 385,420.89

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1.5x scale

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.