Home / 727,998.08-1,004,640.71-422,255.48

Finding the Fourth Proportional to 727,998.08, 1,004,640.71 and 422,255.48

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Solution

The fourth proportional to 727,998.08, 1,004,640.71 and 422,255.48 is: 582,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,998.08 : 1,004,640.71 = 422,255.48 : x
  2. Step 2: Convert to fraction form
    727,998.08/1,004,640.71 = 422,255.48/x
  3. Step 3: Cross multiply
    727,998.08x = 1,004,640.71 × 422,255.48
  4. Step 4: Simplify right side
    727,998.08x = 424,215,041,261.03
  5. Step 5: Solve for x
    x = 424,215,041,261.03/727,998.08
  6. Step 6: Final answer
    x = 582,714.51

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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.