Home / 728,100.89-1,004,751.83-422,190.19

Finding the Fourth Proportional to 728,100.89, 1,004,751.83 and 422,190.19

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Solution

The fourth proportional to 728,100.89, 1,004,751.83 and 422,190.19 is: 582,606.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,100.89 : 1,004,751.83 = 422,190.19 : x
  2. Step 2: Convert to fraction form
    728,100.89/1,004,751.83 = 422,190.19/x
  3. Step 3: Cross multiply
    728,100.89x = 1,004,751.83 × 422,190.19
  4. Step 4: Simplify right side
    728,100.89x = 424,196,366,010.55
  5. Step 5: Solve for x
    x = 424,196,366,010.55/728,100.89
  6. Step 6: Final answer
    x = 582,606.58

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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.