Home / 685,747.60-1,028,621.40-187,111.60

Finding the Fourth Proportional to 685,747.60, 1,028,621.40 and 187,111.60

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Solution

The fourth proportional to 685,747.60, 1,028,621.40 and 187,111.60 is: 280,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,747.60 : 1,028,621.40 = 187,111.60 : x
  2. Step 2: Convert to fraction form
    685,747.60/1,028,621.40 = 187,111.60/x
  3. Step 3: Cross multiply
    685,747.60x = 1,028,621.40 × 187,111.60
  4. Step 4: Simplify right side
    685,747.60x = 192,466,995,948.24
  5. Step 5: Solve for x
    x = 192,466,995,948.24/685,747.60
  6. Step 6: Final answer
    x = 280,667.40

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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.