Home / 728,099.35-1,004,781.78-405,829.91

Finding the Fourth Proportional to 728,099.35, 1,004,781.78 and 405,829.91

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Solution

The fourth proportional to 728,099.35, 1,004,781.78 and 405,829.91 is: 560,047.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,099.35 : 1,004,781.78 = 405,829.91 : x
  2. Step 2: Convert to fraction form
    728,099.35/1,004,781.78 = 405,829.91/x
  3. Step 3: Cross multiply
    728,099.35x = 1,004,781.78 × 405,829.91
  4. Step 4: Simplify right side
    728,099.35x = 407,770,501,858.99
  5. Step 5: Solve for x
    x = 407,770,501,858.99/728,099.35
  6. Step 6: Final answer
    x = 560,047.89

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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.