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Finding the Fourth Proportional to 493,412.04, 680,953.50 and 278,604.90

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Solution

The fourth proportional to 493,412.04, 680,953.50 and 278,604.90 is: 384,500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,412.04 : 680,953.50 = 278,604.90 : x
  2. Step 2: Convert to fraction form
    493,412.04/680,953.50 = 278,604.90/x
  3. Step 3: Cross multiply
    493,412.04x = 680,953.50 × 278,604.90
  4. Step 4: Simplify right side
    493,412.04x = 189,716,981,772.15
  5. Step 5: Solve for x
    x = 189,716,981,772.15/493,412.04
  6. Step 6: Final answer
    x = 384,500.11

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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.