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Finding the Fourth Proportional to 18,890,430.03, 28,335,803.78 and 5,244,640.44

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Solution

The fourth proportional to 18,890,430.03, 28,335,803.78 and 5,244,640.44 is: 7,867,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890,430.03 : 28,335,803.78 = 5,244,640.44 : x
  2. Step 2: Convert to fraction form
    18,890,430.03/28,335,803.78 = 5,244,640.44/x
  3. Step 3: Cross multiply
    18,890,430.03x = 28,335,803.78 × 5,244,640.44
  4. Step 4: Simplify right side
    18,890,430.03x = 148,611,102,378,269.66
  5. Step 5: Solve for x
    x = 148,611,102,378,269.66/18,890,430.03
  6. Step 6: Final answer
    x = 7,867,004.73

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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.