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Finding the Fourth Proportional to 681,791.96, 940,904.94 and 379,988.12

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Solution

The fourth proportional to 681,791.96, 940,904.94 and 379,988.12 is: 524,401.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,791.96 : 940,904.94 = 379,988.12 : x
  2. Step 2: Convert to fraction form
    681,791.96/940,904.94 = 379,988.12/x
  3. Step 3: Cross multiply
    681,791.96x = 940,904.94 × 379,988.12
  4. Step 4: Simplify right side
    681,791.96x = 357,532,699,249.31
  5. Step 5: Solve for x
    x = 357,532,699,249.31/681,791.96
  6. Step 6: Final answer
    x = 524,401.46

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1.5x scale

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.