Home / 2,800,864.70-4,200,312.90-1,285,273.70

Finding the Fourth Proportional to 2,800,864.70, 4,200,312.90 and 1,285,273.70

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Solution

The fourth proportional to 2,800,864.70, 4,200,312.90 and 1,285,273.70 is: 1,927,458.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,864.70 : 4,200,312.90 = 1,285,273.70 : x
  2. Step 2: Convert to fraction form
    2,800,864.70/4,200,312.90 = 1,285,273.70/x
  3. Step 3: Cross multiply
    2,800,864.70x = 4,200,312.90 × 1,285,273.70
  4. Step 4: Simplify right side
    2,800,864.70x = 5,398,551,702,140.73
  5. Step 5: Solve for x
    x = 5,398,551,702,140.73/2,800,864.70
  6. Step 6: Final answer
    x = 1,927,458.94

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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.