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Finding the Fourth Proportional to 18,949,793.41, 28,424,692.79 and 4,572,861.22

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Solution

The fourth proportional to 18,949,793.41, 28,424,692.79 and 4,572,861.22 is: 6,859,292.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949,793.41 : 28,424,692.79 = 4,572,861.22 : x
  2. Step 2: Convert to fraction form
    18,949,793.41/28,424,692.79 = 4,572,861.22/x
  3. Step 3: Cross multiply
    18,949,793.41x = 28,424,692.79 × 4,572,861.22
  4. Step 4: Simplify right side
    18,949,793.41x = 129,982,175,349,804.59
  5. Step 5: Solve for x
    x = 129,982,175,349,804.59/18,949,793.41
  6. Step 6: Final answer
    x = 6,859,292.48

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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.