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Finding the Fourth Proportional to 558,116.40, 770,191.56 and 303,474

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Solution

The fourth proportional to 558,116.40, 770,191.56 and 303,474 is: 418,789.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,116.40 : 770,191.56 = 303,474 : x
  2. Step 2: Convert to fraction form
    558,116.40/770,191.56 = 303,474/x
  3. Step 3: Cross multiply
    558,116.40x = 770,191.56 × 303,474
  4. Step 4: Simplify right side
    558,116.40x = 233,733,113,479.44
  5. Step 5: Solve for x
    x = 233,733,113,479.44/558,116.40
  6. Step 6: Final answer
    x = 418,789.19

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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.