Home / 727,076.80-1,003,356.48-421,194.88

Finding the Fourth Proportional to 727,076.80, 1,003,356.48 and 421,194.88

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Solution

The fourth proportional to 727,076.80, 1,003,356.48 and 421,194.88 is: 581,243.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,076.80 : 1,003,356.48 = 421,194.88 : x
  2. Step 2: Convert to fraction form
    727,076.80/1,003,356.48 = 421,194.88/x
  3. Step 3: Cross multiply
    727,076.80x = 1,003,356.48 × 421,194.88
  4. Step 4: Simplify right side
    727,076.80x = 422,608,612,190.82
  5. Step 5: Solve for x
    x = 422,608,612,190.82/727,076.80
  6. Step 6: Final answer
    x = 581,243.43

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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.