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Finding the Fourth Proportional to 493,382.64, 680,885.70 and 278,560.92

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Solution

The fourth proportional to 493,382.64, 680,885.70 and 278,560.92 is: 384,424.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,382.64 : 680,885.70 = 278,560.92 : x
  2. Step 2: Convert to fraction form
    493,382.64/680,885.70 = 278,560.92/x
  3. Step 3: Cross multiply
    493,382.64x = 680,885.70 × 278,560.92
  4. Step 4: Simplify right side
    493,382.64x = 189,668,147,006.84
  5. Step 5: Solve for x
    x = 189,668,147,006.84/493,382.64
  6. Step 6: Final answer
    x = 384,424.04

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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.