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Finding the Fourth Proportional to 558,319.85, 770,443.49 and 303,665.57

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Solution

The fourth proportional to 558,319.85, 770,443.49 and 303,665.57 is: 419,037.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,319.85 : 770,443.49 = 303,665.57 : x
  2. Step 2: Convert to fraction form
    558,319.85/770,443.49 = 303,665.57/x
  3. Step 3: Cross multiply
    558,319.85x = 770,443.49 × 303,665.57
  4. Step 4: Simplify right side
    558,319.85x = 233,957,160,025.31
  5. Step 5: Solve for x
    x = 233,957,160,025.31/558,319.85
  6. Step 6: Final answer
    x = 419,037.87

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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.