Home / 728,325-1,005,148.42-401,701.96

Finding the Fourth Proportional to 728,325, 1,005,148.42 and 401,701.96

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Solution

The fourth proportional to 728,325, 1,005,148.42 and 401,701.96 is: 554,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,325 : 1,005,148.42 = 401,701.96 : x
  2. Step 2: Convert to fraction form
    728,325/1,005,148.42 = 401,701.96/x
  3. Step 3: Cross multiply
    728,325x = 1,005,148.42 × 401,701.96
  4. Step 4: Simplify right side
    728,325x = 403,770,090,404.90
  5. Step 5: Solve for x
    x = 403,770,090,404.90/728,325
  6. Step 6: Final answer
    x = 554,381.75

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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.