Home / 856,004.38-1,284,219.81-256,976.57

Finding the Fourth Proportional to 856,004.38, 1,284,219.81 and 256,976.57

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Solution

The fourth proportional to 856,004.38, 1,284,219.81 and 256,976.57 is: 385,528.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,004.38 : 1,284,219.81 = 256,976.57 : x
  2. Step 2: Convert to fraction form
    856,004.38/1,284,219.81 = 256,976.57/x
  3. Step 3: Cross multiply
    856,004.38x = 1,284,219.81 × 256,976.57
  4. Step 4: Simplify right side
    856,004.38x = 330,014,405,110.40
  5. Step 5: Solve for x
    x = 330,014,405,110.40/856,004.38
  6. Step 6: Final answer
    x = 385,528.88

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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.