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Finding the Fourth Proportional to 8,399,793.60, 12,609,021.60 and 5,208,523.20

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Solution

The fourth proportional to 8,399,793.60, 12,609,021.60 and 5,208,523.20 is: 7,818,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399,793.60 : 12,609,021.60 = 5,208,523.20 : x
  2. Step 2: Convert to fraction form
    8,399,793.60/12,609,021.60 = 5,208,523.20/x
  3. Step 3: Cross multiply
    8,399,793.60x = 12,609,021.60 × 5,208,523.20
  4. Step 4: Simplify right side
    8,399,793.60x = 65,674,381,532,901.12
  5. Step 5: Solve for x
    x = 65,674,381,532,901.12/8,399,793.60
  6. Step 6: Final answer
    x = 7,818,570.87

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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.