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Finding the Fourth Proportional to 503,382.72, 694,511.73 and 285,555.54

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Solution

The fourth proportional to 503,382.72, 694,511.73 and 285,555.54 is: 393,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,382.72 : 694,511.73 = 285,555.54 : x
  2. Step 2: Convert to fraction form
    503,382.72/694,511.73 = 285,555.54/x
  3. Step 3: Cross multiply
    503,382.72x = 694,511.73 × 285,555.54
  4. Step 4: Simplify right side
    503,382.72x = 198,321,672,096.48
  5. Step 5: Solve for x
    x = 198,321,672,096.48/503,382.72
  6. Step 6: Final answer
    x = 393,977.91

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1.5x scale

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.