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Finding the Fourth Proportional to 493,425.63, 680,927.54 and 278,579.54

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Solution

The fourth proportional to 493,425.63, 680,927.54 and 278,579.54 is: 384,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,425.63 : 680,927.54 = 278,579.54 : x
  2. Step 2: Convert to fraction form
    493,425.63/680,927.54 = 278,579.54/x
  3. Step 3: Cross multiply
    493,425.63x = 680,927.54 × 278,579.54
  4. Step 4: Simplify right side
    493,425.63x = 189,692,480,866.53
  5. Step 5: Solve for x
    x = 189,692,480,866.53/493,425.63
  6. Step 6: Final answer
    x = 384,439.86

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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.