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Finding the Fourth Proportional to 8,668,766.40, 13,004,704.80 and 3,620,587.20

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Solution

The fourth proportional to 8,668,766.40, 13,004,704.80 and 3,620,587.20 is: 5,431,530.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668,766.40 : 13,004,704.80 = 3,620,587.20 : x
  2. Step 2: Convert to fraction form
    8,668,766.40/13,004,704.80 = 3,620,587.20/x
  3. Step 3: Cross multiply
    8,668,766.40x = 13,004,704.80 × 3,620,587.20
  4. Step 4: Simplify right side
    8,668,766.40x = 47,084,667,738,658.56
  5. Step 5: Solve for x
    x = 47,084,667,738,658.56/8,668,766.40
  6. Step 6: Final answer
    x = 5,431,530.34

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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.