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Finding the Fourth Proportional to 2,662,964.40, 3,994,446.60 and 1,812,658.80

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Solution

The fourth proportional to 2,662,964.40, 3,994,446.60 and 1,812,658.80 is: 2,718,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,662,964.40 : 3,994,446.60 = 1,812,658.80 : x
  2. Step 2: Convert to fraction form
    2,662,964.40/3,994,446.60 = 1,812,658.80/x
  3. Step 3: Cross multiply
    2,662,964.40x = 3,994,446.60 × 1,812,658.80
  4. Step 4: Simplify right side
    2,662,964.40x = 7,240,568,780,620.08
  5. Step 5: Solve for x
    x = 7,240,568,780,620.08/2,662,964.40
  6. Step 6: Final answer
    x = 2,718,988.20

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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.