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Finding the Fourth Proportional to 8,520,738.40, 12,774,886.80 and 3,469,448.80

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Solution

The fourth proportional to 8,520,738.40, 12,774,886.80 and 3,469,448.80 is: 5,201,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520,738.40 : 12,774,886.80 = 3,469,448.80 : x
  2. Step 2: Convert to fraction form
    8,520,738.40/12,774,886.80 = 3,469,448.80/x
  3. Step 3: Cross multiply
    8,520,738.40x = 12,774,886.80 × 3,469,448.80
  4. Step 4: Simplify right side
    8,520,738.40x = 44,321,815,678,395.84
  5. Step 5: Solve for x
    x = 44,321,815,678,395.84/8,520,738.40
  6. Step 6: Final answer
    x = 5,201,640.23

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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.