Home / 2,800,900.70-4,200,366.90-1,285,309.70

Finding the Fourth Proportional to 2,800,900.70, 4,200,366.90 and 1,285,309.70

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Solution

The fourth proportional to 2,800,900.70, 4,200,366.90 and 1,285,309.70 is: 1,927,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,900.70 : 4,200,366.90 = 1,285,309.70 : x
  2. Step 2: Convert to fraction form
    2,800,900.70/4,200,366.90 = 1,285,309.70/x
  3. Step 3: Cross multiply
    2,800,900.70x = 4,200,366.90 × 1,285,309.70
  4. Step 4: Simplify right side
    2,800,900.70x = 5,398,772,320,128.93
  5. Step 5: Solve for x
    x = 5,398,772,320,128.93/2,800,900.70
  6. Step 6: Final answer
    x = 1,927,512.93

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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.