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Finding the Fourth Proportional to 1,941,621.60, 2,910,358.80 and 743,080.80

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Solution

The fourth proportional to 1,941,621.60, 2,910,358.80 and 743,080.80 is: 1,113,827.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941,621.60 : 2,910,358.80 = 743,080.80 : x
  2. Step 2: Convert to fraction form
    1,941,621.60/2,910,358.80 = 743,080.80/x
  3. Step 3: Cross multiply
    1,941,621.60x = 2,910,358.80 × 743,080.80
  4. Step 4: Simplify right side
    1,941,621.60x = 2,162,631,745,391.04
  5. Step 5: Solve for x
    x = 2,162,631,745,391.04/1,941,621.60
  6. Step 6: Final answer
    x = 1,113,827.61

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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.