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Finding the Fourth Proportional to 558,283.44, 770,429 and 303,638.88

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Solution

The fourth proportional to 558,283.44, 770,429 and 303,638.88 is: 419,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,283.44 : 770,429 = 303,638.88 : x
  2. Step 2: Convert to fraction form
    558,283.44/770,429 = 303,638.88/x
  3. Step 3: Cross multiply
    558,283.44x = 770,429 × 303,638.88
  4. Step 4: Simplify right side
    558,283.44x = 233,932,198,679.52
  5. Step 5: Solve for x
    x = 233,932,198,679.52/558,283.44
  6. Step 6: Final answer
    x = 419,020.49

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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.