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Finding the Fourth Proportional to 639,559.89, 959,841.02 and 446,176.69

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Solution

The fourth proportional to 639,559.89, 959,841.02 and 446,176.69 is: 669,614.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,559.89 : 959,841.02 = 446,176.69 : x
  2. Step 2: Convert to fraction form
    639,559.89/959,841.02 = 446,176.69/x
  3. Step 3: Cross multiply
    639,559.89x = 959,841.02 × 446,176.69
  4. Step 4: Simplify right side
    639,559.89x = 428,258,689,229.82
  5. Step 5: Solve for x
    x = 428,258,689,229.82/639,559.89
  6. Step 6: Final answer
    x = 669,614.68

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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.