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Finding the Fourth Proportional to 639,954.57, 960,211.77 and 303,235.85

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Solution

The fourth proportional to 639,954.57, 960,211.77 and 303,235.85 is: 454,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,954.57 : 960,211.77 = 303,235.85 : x
  2. Step 2: Convert to fraction form
    639,954.57/960,211.77 = 303,235.85/x
  3. Step 3: Cross multiply
    639,954.57x = 960,211.77 × 303,235.85
  4. Step 4: Simplify right side
    639,954.57x = 291,170,633,519.35
  5. Step 5: Solve for x
    x = 291,170,633,519.35/639,954.57
  6. Step 6: Final answer
    x = 454,986.41

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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.