Home / 728,548.62-1,005,403.62-401,874.13

Finding the Fourth Proportional to 728,548.62, 1,005,403.62 and 401,874.13

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Solution

The fourth proportional to 728,548.62, 1,005,403.62 and 401,874.13 is: 554,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,548.62 : 1,005,403.62 = 401,874.13 : x
  2. Step 2: Convert to fraction form
    728,548.62/1,005,403.62 = 401,874.13/x
  3. Step 3: Cross multiply
    728,548.62x = 1,005,403.62 × 401,874.13
  4. Step 4: Simplify right side
    728,548.62x = 404,045,705,086.35
  5. Step 5: Solve for x
    x = 404,045,705,086.35/728,548.62
  6. Step 6: Final answer
    x = 554,589.90

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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.