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Finding the Fourth Proportional to 5,188,279.72, 7,787,142.19 and 2,761,470.39

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Solution

The fourth proportional to 5,188,279.72, 7,787,142.19 and 2,761,470.39 is: 4,144,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188,279.72 : 7,787,142.19 = 2,761,470.39 : x
  2. Step 2: Convert to fraction form
    5,188,279.72/7,787,142.19 = 2,761,470.39/x
  3. Step 3: Cross multiply
    5,188,279.72x = 7,787,142.19 × 2,761,470.39
  4. Step 4: Simplify right side
    5,188,279.72x = 21,503,962,554,654.81
  5. Step 5: Solve for x
    x = 21,503,962,554,654.81/5,188,279.72
  6. Step 6: Final answer
    x = 4,144,719.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.