Home / 2,800,863.70-4,200,311.40-1,285,272.70

Finding the Fourth Proportional to 2,800,863.70, 4,200,311.40 and 1,285,272.70

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Solution

The fourth proportional to 2,800,863.70, 4,200,311.40 and 1,285,272.70 is: 1,927,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,863.70 : 4,200,311.40 = 1,285,272.70 : x
  2. Step 2: Convert to fraction form
    2,800,863.70/4,200,311.40 = 1,285,272.70/x
  3. Step 3: Cross multiply
    2,800,863.70x = 4,200,311.40 × 1,285,272.70
  4. Step 4: Simplify right side
    2,800,863.70x = 5,398,545,573,918.78
  5. Step 5: Solve for x
    x = 5,398,545,573,918.78/2,800,863.70
  6. Step 6: Final answer
    x = 1,927,457.44

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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.