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Finding the Fourth Proportional to 639,591.42, 959,888.50 and 446,208.26

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Solution

The fourth proportional to 639,591.42, 959,888.50 and 446,208.26 is: 669,662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,591.42 : 959,888.50 = 446,208.26 : x
  2. Step 2: Convert to fraction form
    639,591.42/959,888.50 = 446,208.26/x
  3. Step 3: Cross multiply
    639,591.42x = 959,888.50 × 446,208.26
  4. Step 4: Simplify right side
    639,591.42x = 428,310,177,379.01
  5. Step 5: Solve for x
    x = 428,310,177,379.01/639,591.42
  6. Step 6: Final answer
    x = 669,662.17

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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.