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Finding the Fourth Proportional to 479,595.68, 662,107.20 and 288,656

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Solution

The fourth proportional to 479,595.68, 662,107.20 and 288,656 is: 398,504.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,595.68 : 662,107.20 = 288,656 : x
  2. Step 2: Convert to fraction form
    479,595.68/662,107.20 = 288,656/x
  3. Step 3: Cross multiply
    479,595.68x = 662,107.20 × 288,656
  4. Step 4: Simplify right side
    479,595.68x = 191,121,215,923.20
  5. Step 5: Solve for x
    x = 191,121,215,923.20/479,595.68
  6. Step 6: Final answer
    x = 398,504.87

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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.