Home / 2,856,620.40-4,284,930.60-861,817.20

Finding the Fourth Proportional to 2,856,620.40, 4,284,930.60 and 861,817.20

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Solution

The fourth proportional to 2,856,620.40, 4,284,930.60 and 861,817.20 is: 1,292,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856,620.40 : 4,284,930.60 = 861,817.20 : x
  2. Step 2: Convert to fraction form
    2,856,620.40/4,284,930.60 = 861,817.20/x
  3. Step 3: Cross multiply
    2,856,620.40x = 4,284,930.60 × 861,817.20
  4. Step 4: Simplify right side
    2,856,620.40x = 3,692,826,891,886.32
  5. Step 5: Solve for x
    x = 3,692,826,891,886.32/2,856,620.40
  6. Step 6: Final answer
    x = 1,292,725.80

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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.