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Finding the Fourth Proportional to 561,823.82, 775,126.96 and 319,934.87

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Solution

The fourth proportional to 561,823.82, 775,126.96 and 319,934.87 is: 441,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,823.82 : 775,126.96 = 319,934.87 : x
  2. Step 2: Convert to fraction form
    561,823.82/775,126.96 = 319,934.87/x
  3. Step 3: Cross multiply
    561,823.82x = 775,126.96 × 319,934.87
  4. Step 4: Simplify right side
    561,823.82x = 247,990,138,505.62
  5. Step 5: Solve for x
    x = 247,990,138,505.62/561,823.82
  6. Step 6: Final answer
    x = 441,401.97

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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.