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Finding the Fourth Proportional to 493,698.96, 681,305.04 and 278,839.44

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Solution

The fourth proportional to 493,698.96, 681,305.04 and 278,839.44 is: 384,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,698.96 : 681,305.04 = 278,839.44 : x
  2. Step 2: Convert to fraction form
    493,698.96/681,305.04 = 278,839.44/x
  3. Step 3: Cross multiply
    493,698.96x = 681,305.04 × 278,839.44
  4. Step 4: Simplify right side
    493,698.96x = 189,974,715,822.78
  5. Step 5: Solve for x
    x = 189,974,715,822.78/493,698.96
  6. Step 6: Final answer
    x = 384,798.70

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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.