Home / 856,857.30-1,285,285.95-719,999.70

Finding the Fourth Proportional to 856,857.30, 1,285,285.95 and 719,999.70

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Solution

The fourth proportional to 856,857.30, 1,285,285.95 and 719,999.70 is: 1,079,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,857.30 : 1,285,285.95 = 719,999.70 : x
  2. Step 2: Convert to fraction form
    856,857.30/1,285,285.95 = 719,999.70/x
  3. Step 3: Cross multiply
    856,857.30x = 1,285,285.95 × 719,999.70
  4. Step 4: Simplify right side
    856,857.30x = 925,405,498,414.22
  5. Step 5: Solve for x
    x = 925,405,498,414.22/856,857.30
  6. Step 6: Final answer
    x = 1,079,999.55

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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.