Home / 685,280.20-1,027,920.30-186,644.20

Finding the Fourth Proportional to 685,280.20, 1,027,920.30 and 186,644.20

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Solution

The fourth proportional to 685,280.20, 1,027,920.30 and 186,644.20 is: 279,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,280.20 : 1,027,920.30 = 186,644.20 : x
  2. Step 2: Convert to fraction form
    685,280.20/1,027,920.30 = 186,644.20/x
  3. Step 3: Cross multiply
    685,280.20x = 1,027,920.30 × 186,644.20
  4. Step 4: Simplify right side
    685,280.20x = 191,855,362,057.26
  5. Step 5: Solve for x
    x = 191,855,362,057.26/685,280.20
  6. Step 6: Final answer
    x = 279,966.30

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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.