Home / 685,280.70-1,027,921.05-186,644.70

Finding the Fourth Proportional to 685,280.70, 1,027,921.05 and 186,644.70

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Solution

The fourth proportional to 685,280.70, 1,027,921.05 and 186,644.70 is: 279,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,280.70 : 1,027,921.05 = 186,644.70 : x
  2. Step 2: Convert to fraction form
    685,280.70/1,027,921.05 = 186,644.70/x
  3. Step 3: Cross multiply
    685,280.70x = 1,027,921.05 × 186,644.70
  4. Step 4: Simplify right side
    685,280.70x = 191,856,016,000.94
  5. Step 5: Solve for x
    x = 191,856,016,000.94/685,280.70
  6. Step 6: Final answer
    x = 279,967.05

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Double scale
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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.