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Finding the Fourth Proportional to 12,601,661.60, 18,890,050.80 and 6,206,679.20

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Solution

The fourth proportional to 12,601,661.60, 18,890,050.80 and 6,206,679.20 is: 9,303,890.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601,661.60 : 18,890,050.80 = 6,206,679.20 : x
  2. Step 2: Convert to fraction form
    12,601,661.60/18,890,050.80 = 6,206,679.20/x
  3. Step 3: Cross multiply
    12,601,661.60x = 18,890,050.80 × 6,206,679.20
  4. Step 4: Simplify right side
    12,601,661.60x = 117,244,485,387,303.38
  5. Step 5: Solve for x
    x = 117,244,485,387,303.38/12,601,661.60
  6. Step 6: Final answer
    x = 9,303,890.96

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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.