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Finding the Fourth Proportional to 2,650,622.40, 3,978,007.20 and 1,230,854.40

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Solution

The fourth proportional to 2,650,622.40, 3,978,007.20 and 1,230,854.40 is: 1,847,244.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650,622.40 : 3,978,007.20 = 1,230,854.40 : x
  2. Step 2: Convert to fraction form
    2,650,622.40/3,978,007.20 = 1,230,854.40/x
  3. Step 3: Cross multiply
    2,650,622.40x = 3,978,007.20 × 1,230,854.40
  4. Step 4: Simplify right side
    2,650,622.40x = 4,896,347,665,351.68
  5. Step 5: Solve for x
    x = 4,896,347,665,351.68/2,650,622.40
  6. Step 6: Final answer
    x = 1,847,244.51

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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.