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Finding the Fourth Proportional to 503,391.22, 694,523.52 and 285,563.98

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Solution

The fourth proportional to 503,391.22, 694,523.52 and 285,563.98 is: 393,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,391.22 : 694,523.52 = 285,563.98 : x
  2. Step 2: Convert to fraction form
    503,391.22/694,523.52 = 285,563.98/x
  3. Step 3: Cross multiply
    503,391.22x = 694,523.52 × 285,563.98
  4. Step 4: Simplify right side
    503,391.22x = 198,330,900,574.81
  5. Step 5: Solve for x
    x = 198,330,900,574.81/503,391.22
  6. Step 6: Final answer
    x = 393,989.59

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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.