Home / 685,517.91-1,028,265.85-186,881.91

Finding the Fourth Proportional to 685,517.91, 1,028,265.85 and 186,881.91

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Solution

The fourth proportional to 685,517.91, 1,028,265.85 and 186,881.91 is: 280,319.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,517.91 : 1,028,265.85 = 186,881.91 : x
  2. Step 2: Convert to fraction form
    685,517.91/1,028,265.85 = 186,881.91/x
  3. Step 3: Cross multiply
    685,517.91x = 1,028,265.85 × 186,881.91
  4. Step 4: Simplify right side
    685,517.91x = 192,164,286,035.77
  5. Step 5: Solve for x
    x = 192,164,286,035.77/685,517.91
  6. Step 6: Final answer
    x = 280,319.86

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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.