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Finding the Fourth Proportional to 493,395.33, 680,885.44 and 278,535.39

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Solution

The fourth proportional to 493,395.33, 680,885.44 and 278,535.39 is: 384,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,395.33 : 680,885.44 = 278,535.39 : x
  2. Step 2: Convert to fraction form
    493,395.33/680,885.44 = 278,535.39/x
  3. Step 3: Cross multiply
    493,395.33x = 680,885.44 × 278,535.39
  4. Step 4: Simplify right side
    493,395.33x = 189,650,691,575.72
  5. Step 5: Solve for x
    x = 189,650,691,575.72/493,395.33
  6. Step 6: Final answer
    x = 384,378.77

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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.