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Finding the Fourth Proportional to 558,539.12, 770,760.96 and 303,891.32

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Solution

The fourth proportional to 558,539.12, 770,760.96 and 303,891.32 is: 419,357.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,539.12 : 770,760.96 = 303,891.32 : x
  2. Step 2: Convert to fraction form
    558,539.12/770,760.96 = 303,891.32/x
  3. Step 3: Cross multiply
    558,539.12x = 770,760.96 × 303,891.32
  4. Step 4: Simplify right side
    558,539.12x = 234,227,565,538.87
  5. Step 5: Solve for x
    x = 234,227,565,538.87/558,539.12
  6. Step 6: Final answer
    x = 419,357.49

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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.