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Finding the Fourth Proportional to 451,017.47, 622,168.11 and 278,880.39

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Solution

The fourth proportional to 451,017.47, 622,168.11 and 278,880.39 is: 384,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,017.47 : 622,168.11 = 278,880.39 : x
  2. Step 2: Convert to fraction form
    451,017.47/622,168.11 = 278,880.39/x
  3. Step 3: Cross multiply
    451,017.47x = 622,168.11 × 278,880.39
  4. Step 4: Simplify right side
    451,017.47x = 173,510,485,162.36
  5. Step 5: Solve for x
    x = 173,510,485,162.36/451,017.47
  6. Step 6: Final answer
    x = 384,709.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.