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Finding the Fourth Proportional to 488,476.71, 673,761.20 and 343,589.79

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Solution

The fourth proportional to 488,476.71, 673,761.20 and 343,589.79 is: 473,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,476.71 : 673,761.20 = 343,589.79 : x
  2. Step 2: Convert to fraction form
    488,476.71/673,761.20 = 343,589.79/x
  3. Step 3: Cross multiply
    488,476.71x = 673,761.20 × 343,589.79
  4. Step 4: Simplify right side
    488,476.71x = 231,497,467,500.20
  5. Step 5: Solve for x
    x = 231,497,467,500.20/488,476.71
  6. Step 6: Final answer
    x = 473,917.10

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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.