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Finding the Fourth Proportional to 6,647,930.40, 9,964,897.20 and 2,602,855.20

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Solution

The fourth proportional to 6,647,930.40, 9,964,897.20 and 2,602,855.20 is: 3,901,542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647,930.40 : 9,964,897.20 = 2,602,855.20 : x
  2. Step 2: Convert to fraction form
    6,647,930.40/9,964,897.20 = 2,602,855.20/x
  3. Step 3: Cross multiply
    6,647,930.40x = 9,964,897.20 × 2,602,855.20
  4. Step 4: Simplify right side
    6,647,930.40x = 25,937,184,494,485.44
  5. Step 5: Solve for x
    x = 25,937,184,494,485.44/6,647,930.40
  6. Step 6: Final answer
    x = 3,901,542.73

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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.