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Finding the Fourth Proportional to 6,425,608.40, 8,867,287.11 and 3,485,418.15

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Solution

The fourth proportional to 6,425,608.40, 8,867,287.11 and 3,485,418.15 is: 4,809,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425,608.40 : 8,867,287.11 = 3,485,418.15 : x
  2. Step 2: Convert to fraction form
    6,425,608.40/8,867,287.11 = 3,485,418.15/x
  3. Step 3: Cross multiply
    6,425,608.40x = 8,867,287.11 × 3,485,418.15
  4. Step 4: Simplify right side
    6,425,608.40x = 30,906,203,480,777.69
  5. Step 5: Solve for x
    x = 30,906,203,480,777.69/6,425,608.40
  6. Step 6: Final answer
    x = 4,809,848.59

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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.