Home / 728,200.74-1,004,896.11-405,903.92

Finding the Fourth Proportional to 728,200.74, 1,004,896.11 and 405,903.92

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Solution

The fourth proportional to 728,200.74, 1,004,896.11 and 405,903.92 is: 560,135.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,200.74 : 1,004,896.11 = 405,903.92 : x
  2. Step 2: Convert to fraction form
    728,200.74/1,004,896.11 = 405,903.92/x
  3. Step 3: Cross multiply
    728,200.74x = 1,004,896.11 × 405,903.92
  4. Step 4: Simplify right side
    728,200.74x = 407,891,265,217.27
  5. Step 5: Solve for x
    x = 407,891,265,217.27/728,200.74
  6. Step 6: Final answer
    x = 560,135.75

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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.