Home / 511,261.12-705,079.92-320,291.20

Finding the Fourth Proportional to 511,261.12, 705,079.92 and 320,291.20

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Solution

The fourth proportional to 511,261.12, 705,079.92 and 320,291.20 is: 441,713.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,261.12 : 705,079.92 = 320,291.20 : x
  2. Step 2: Convert to fraction form
    511,261.12/705,079.92 = 320,291.20/x
  3. Step 3: Cross multiply
    511,261.12x = 705,079.92 × 320,291.20
  4. Step 4: Simplify right side
    511,261.12x = 225,830,893,672.70
  5. Step 5: Solve for x
    x = 225,830,893,672.70/511,261.12
  6. Step 6: Final answer
    x = 441,713.41

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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.