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Finding the Fourth Proportional to 466,679.93, 643,849.88 and 305,626.82

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Solution

The fourth proportional to 466,679.93, 643,849.88 and 305,626.82 is: 421,654.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,679.93 : 643,849.88 = 305,626.82 : x
  2. Step 2: Convert to fraction form
    466,679.93/643,849.88 = 305,626.82/x
  3. Step 3: Cross multiply
    466,679.93x = 643,849.88 × 305,626.82
  4. Step 4: Simplify right side
    466,679.93x = 196,777,786,634.40
  5. Step 5: Solve for x
    x = 196,777,786,634.40/466,679.93
  6. Step 6: Final answer
    x = 421,654.71

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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.