Home / 728,098.37-1,004,553.09-422,113.69

Finding the Fourth Proportional to 728,098.37, 1,004,553.09 and 422,113.69

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Solution

The fourth proportional to 728,098.37, 1,004,553.09 and 422,113.69 is: 582,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,098.37 : 1,004,553.09 = 422,113.69 : x
  2. Step 2: Convert to fraction form
    728,098.37/1,004,553.09 = 422,113.69/x
  3. Step 3: Cross multiply
    728,098.37x = 1,004,553.09 × 422,113.69
  4. Step 4: Simplify right side
    728,098.37x = 424,035,611,620.80
  5. Step 5: Solve for x
    x = 424,035,611,620.80/728,098.37
  6. Step 6: Final answer
    x = 582,387.81

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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.