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Finding the Fourth Proportional to 681,003.90, 1,019,950.65 and 401,067.90

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Solution

The fourth proportional to 681,003.90, 1,019,950.65 and 401,067.90 is: 600,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,003.90 : 1,019,950.65 = 401,067.90 : x
  2. Step 2: Convert to fraction form
    681,003.90/1,019,950.65 = 401,067.90/x
  3. Step 3: Cross multiply
    681,003.90x = 1,019,950.65 × 401,067.90
  4. Step 4: Simplify right side
    681,003.90x = 409,069,465,299.14
  5. Step 5: Solve for x
    x = 409,069,465,299.14/681,003.90
  6. Step 6: Final answer
    x = 600,685.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.