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Finding the Fourth Proportional to 8,667,907.40, 13,003,416.30 and 3,619,728.20

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Solution

The fourth proportional to 8,667,907.40, 13,003,416.30 and 3,619,728.20 is: 5,430,241.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667,907.40 : 13,003,416.30 = 3,619,728.20 : x
  2. Step 2: Convert to fraction form
    8,667,907.40/13,003,416.30 = 3,619,728.20/x
  3. Step 3: Cross multiply
    8,667,907.40x = 13,003,416.30 × 3,619,728.20
  4. Step 4: Simplify right side
    8,667,907.40x = 47,068,832,677,449.66
  5. Step 5: Solve for x
    x = 47,068,832,677,449.66/8,667,907.40
  6. Step 6: Final answer
    x = 5,430,241.75

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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.