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Finding the Fourth Proportional to 791,912.77, 1,092,757.77 and 486,002.03

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Solution

The fourth proportional to 791,912.77, 1,092,757.77 and 486,002.03 is: 670,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,912.77 : 1,092,757.77 = 486,002.03 : x
  2. Step 2: Convert to fraction form
    791,912.77/1,092,757.77 = 486,002.03/x
  3. Step 3: Cross multiply
    791,912.77x = 1,092,757.77 × 486,002.03
  4. Step 4: Simplify right side
    791,912.77x = 531,082,489,054.48
  5. Step 5: Solve for x
    x = 531,082,489,054.48/791,912.77
  6. Step 6: Final answer
    x = 670,632.56

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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.