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Finding the Fourth Proportional to 679,391.33, 937,540.73 and 373,468.31

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Solution

The fourth proportional to 679,391.33, 937,540.73 and 373,468.31 is: 515,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,391.33 : 937,540.73 = 373,468.31 : x
  2. Step 2: Convert to fraction form
    679,391.33/937,540.73 = 373,468.31/x
  3. Step 3: Cross multiply
    679,391.33x = 937,540.73 × 373,468.31
  4. Step 4: Simplify right side
    679,391.33x = 350,141,745,434.22
  5. Step 5: Solve for x
    x = 350,141,745,434.22/679,391.33
  6. Step 6: Final answer
    x = 515,375.65

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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.