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Finding the Fourth Proportional to 3,747,692.72, 5,171,817.68 and 2,028,813.28

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Solution

The fourth proportional to 3,747,692.72, 5,171,817.68 and 2,028,813.28 is: 2,799,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747,692.72 : 5,171,817.68 = 2,028,813.28 : x
  2. Step 2: Convert to fraction form
    3,747,692.72/5,171,817.68 = 2,028,813.28/x
  3. Step 3: Cross multiply
    3,747,692.72x = 5,171,817.68 × 2,028,813.28
  4. Step 4: Simplify right side
    3,747,692.72x = 10,492,652,390,922.79
  5. Step 5: Solve for x
    x = 10,492,652,390,922.79/3,747,692.72
  6. Step 6: Final answer
    x = 2,799,763.26

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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.