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Finding the Fourth Proportional to 558,489.20, 770,718.44 and 303,842.21

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Solution

The fourth proportional to 558,489.20, 770,718.44 and 303,842.21 is: 419,304.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,489.20 : 770,718.44 = 303,842.21 : x
  2. Step 2: Convert to fraction form
    558,489.20/770,718.44 = 303,842.21/x
  3. Step 3: Cross multiply
    558,489.20x = 770,718.44 × 303,842.21
  4. Step 4: Simplify right side
    558,489.20x = 234,176,791,003.37
  5. Step 5: Solve for x
    x = 234,176,791,003.37/558,489.20
  6. Step 6: Final answer
    x = 419,304.07

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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.