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Finding the Fourth Proportional to 8,332,748.64, 12,489,279.84 and 3,212,019.36

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Solution

The fourth proportional to 8,332,748.64, 12,489,279.84 and 3,212,019.36 is: 4,814,234.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,332,748.64 : 12,489,279.84 = 3,212,019.36 : x
  2. Step 2: Convert to fraction form
    8,332,748.64/12,489,279.84 = 3,212,019.36/x
  3. Step 3: Cross multiply
    8,332,748.64x = 12,489,279.84 × 3,212,019.36
  4. Step 4: Simplify right side
    8,332,748.64x = 40,115,808,638,537.70
  5. Step 5: Solve for x
    x = 40,115,808,638,537.70/8,332,748.64
  6. Step 6: Final answer
    x = 4,814,234.82

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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.