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Finding the Fourth Proportional to 3,394,805.76, 4,684,738.52 and 1,866,912.89

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Solution

The fourth proportional to 3,394,805.76, 4,684,738.52 and 1,866,912.89 is: 2,576,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394,805.76 : 4,684,738.52 = 1,866,912.89 : x
  2. Step 2: Convert to fraction form
    3,394,805.76/4,684,738.52 = 1,866,912.89/x
  3. Step 3: Cross multiply
    3,394,805.76x = 4,684,738.52 × 1,866,912.89
  4. Step 4: Simplify right side
    3,394,805.76x = 8,745,998,710,511.11
  5. Step 5: Solve for x
    x = 8,745,998,710,511.11/3,394,805.76
  6. Step 6: Final answer
    x = 2,576,288.40

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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.