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Finding the Fourth Proportional to 672,212, 927,672 and 370,425.44

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Solution

The fourth proportional to 672,212, 927,672 and 370,425.44 is: 511,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,212 : 927,672 = 370,425.44 : x
  2. Step 2: Convert to fraction form
    672,212/927,672 = 370,425.44/x
  3. Step 3: Cross multiply
    672,212x = 927,672 × 370,425.44
  4. Step 4: Simplify right side
    672,212x = 343,633,308,775.68
  5. Step 5: Solve for x
    x = 343,633,308,775.68/672,212
  6. Step 6: Final answer
    x = 511,197.82

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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.