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Finding the Fourth Proportional to 6,449,392.19, 8,899,894.34 and 3,509,221.39

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Solution

The fourth proportional to 6,449,392.19, 8,899,894.34 and 3,509,221.39 is: 4,842,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449,392.19 : 8,899,894.34 = 3,509,221.39 : x
  2. Step 2: Convert to fraction form
    6,449,392.19/8,899,894.34 = 3,509,221.39/x
  3. Step 3: Cross multiply
    6,449,392.19x = 8,899,894.34 × 3,509,221.39
  4. Step 4: Simplify right side
    6,449,392.19x = 31,231,699,560,031.67
  5. Step 5: Solve for x
    x = 31,231,699,560,031.67/6,449,392.19
  6. Step 6: Final answer
    x = 4,842,580.30

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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.