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Finding the Fourth Proportional to 662,960, 994,595.52 and 219,728

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Solution

The fourth proportional to 662,960, 994,595.52 and 219,728 is: 329,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,960 : 994,595.52 = 219,728 : x
  2. Step 2: Convert to fraction form
    662,960/994,595.52 = 219,728/x
  3. Step 3: Cross multiply
    662,960x = 994,595.52 × 219,728
  4. Step 4: Simplify right side
    662,960x = 218,540,484,418.56
  5. Step 5: Solve for x
    x = 218,540,484,418.56/662,960
  6. Step 6: Final answer
    x = 329,643.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.