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Finding the Fourth Proportional to 493,846.64, 681,473.04 and 289,905.92

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Solution

The fourth proportional to 493,846.64, 681,473.04 and 289,905.92 is: 400,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,846.64 : 681,473.04 = 289,905.92 : x
  2. Step 2: Convert to fraction form
    493,846.64/681,473.04 = 289,905.92/x
  3. Step 3: Cross multiply
    493,846.64x = 681,473.04 × 289,905.92
  4. Step 4: Simplify right side
    493,846.64x = 197,563,068,616.40
  5. Step 5: Solve for x
    x = 197,563,068,616.40/493,846.64
  6. Step 6: Final answer
    x = 400,049.43

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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.