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Finding the Fourth Proportional to 493,475.32, 680,989.96 and 278,624.44

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Solution

The fourth proportional to 493,475.32, 680,989.96 and 278,624.44 is: 384,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,475.32 : 680,989.96 = 278,624.44 : x
  2. Step 2: Convert to fraction form
    493,475.32/680,989.96 = 278,624.44/x
  3. Step 3: Cross multiply
    493,475.32x = 680,989.96 × 278,624.44
  4. Step 4: Simplify right side
    493,475.32x = 189,740,446,250.62
  5. Step 5: Solve for x
    x = 189,740,446,250.62/493,475.32
  6. Step 6: Final answer
    x = 384,498.35

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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.