Home / 853,358.32-1,280,224.43-320,879.35

Finding the Fourth Proportional to 853,358.32, 1,280,224.43 and 320,879.35

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Solution

The fourth proportional to 853,358.32, 1,280,224.43 and 320,879.35 is: 481,389.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,358.32 : 1,280,224.43 = 320,879.35 : x
  2. Step 2: Convert to fraction form
    853,358.32/1,280,224.43 = 320,879.35/x
  3. Step 3: Cross multiply
    853,358.32x = 1,280,224.43 × 320,879.35
  4. Step 4: Simplify right side
    853,358.32x = 410,797,582,952.52
  5. Step 5: Solve for x
    x = 410,797,582,952.52/853,358.32
  6. Step 6: Final answer
    x = 481,389.32

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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.