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Finding the Fourth Proportional to 639,592.23, 959,889.72 and 446,209.07

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Solution

The fourth proportional to 639,592.23, 959,889.72 and 446,209.07 is: 669,663.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,592.23 : 959,889.72 = 446,209.07 : x
  2. Step 2: Convert to fraction form
    639,592.23/959,889.72 = 446,209.07/x
  3. Step 3: Cross multiply
    639,592.23x = 959,889.72 × 446,209.07
  4. Step 4: Simplify right side
    639,592.23x = 428,311,496,137.60
  5. Step 5: Solve for x
    x = 428,311,496,137.60/639,592.23
  6. Step 6: Final answer
    x = 669,663.38

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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.