Home / 685,205.70-1,027,808.55-186,569.70

Finding the Fourth Proportional to 685,205.70, 1,027,808.55 and 186,569.70

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Solution

The fourth proportional to 685,205.70, 1,027,808.55 and 186,569.70 is: 279,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,205.70 : 1,027,808.55 = 186,569.70 : x
  2. Step 2: Convert to fraction form
    685,205.70/1,027,808.55 = 186,569.70/x
  3. Step 3: Cross multiply
    685,205.70x = 1,027,808.55 × 186,569.70
  4. Step 4: Simplify right side
    685,205.70x = 191,757,932,830.94
  5. Step 5: Solve for x
    x = 191,757,932,830.94/685,205.70
  6. Step 6: Final answer
    x = 279,854.55

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Similar ratio
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1.5x scale

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.