Home / 1,280,200.52-1,919,878.67-427,037.06

Finding the Fourth Proportional to 1,280,200.52, 1,919,878.67 and 427,037.06

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Solution

The fourth proportional to 1,280,200.52, 1,919,878.67 and 427,037.06 is: 640,414.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,200.52 : 1,919,878.67 = 427,037.06 : x
  2. Step 2: Convert to fraction form
    1,280,200.52/1,919,878.67 = 427,037.06/x
  3. Step 3: Cross multiply
    1,280,200.52x = 1,919,878.67 × 427,037.06
  4. Step 4: Simplify right side
    1,280,200.52x = 819,859,348,660.80
  5. Step 5: Solve for x
    x = 819,859,348,660.80/1,280,200.52
  6. Step 6: Final answer
    x = 640,414.79

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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.