Home / 1,280,168.28-1,918,904.58-427,011.48

Finding the Fourth Proportional to 1,280,168.28, 1,918,904.58 and 427,011.48

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Solution

The fourth proportional to 1,280,168.28, 1,918,904.58 and 427,011.48 is: 640,067.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,168.28 : 1,918,904.58 = 427,011.48 : x
  2. Step 2: Convert to fraction form
    1,280,168.28/1,918,904.58 = 427,011.48/x
  3. Step 3: Cross multiply
    1,280,168.28x = 1,918,904.58 × 427,011.48
  4. Step 4: Simplify right side
    1,280,168.28x = 819,394,284,684.58
  5. Step 5: Solve for x
    x = 819,394,284,684.58/1,280,168.28
  6. Step 6: Final answer
    x = 640,067.64

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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.