Home / 728,251.70-1,004,987.52-405,954.86

Finding the Fourth Proportional to 728,251.70, 1,004,987.52 and 405,954.86

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Solution

The fourth proportional to 728,251.70, 1,004,987.52 and 405,954.86 is: 560,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,251.70 : 1,004,987.52 = 405,954.86 : x
  2. Step 2: Convert to fraction form
    728,251.70/1,004,987.52 = 405,954.86/x
  3. Step 3: Cross multiply
    728,251.70x = 1,004,987.52 × 405,954.86
  4. Step 4: Simplify right side
    728,251.70x = 407,979,562,958.41
  5. Step 5: Solve for x
    x = 407,979,562,958.41/728,251.70
  6. Step 6: Final answer
    x = 560,217.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.