Home / 685,057.20-1,027,585.80-186,421.20

Finding the Fourth Proportional to 685,057.20, 1,027,585.80 and 186,421.20

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Solution

The fourth proportional to 685,057.20, 1,027,585.80 and 186,421.20 is: 279,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,057.20 : 1,027,585.80 = 186,421.20 : x
  2. Step 2: Convert to fraction form
    685,057.20/1,027,585.80 = 186,421.20/x
  3. Step 3: Cross multiply
    685,057.20x = 1,027,585.80 × 186,421.20
  4. Step 4: Simplify right side
    685,057.20x = 191,563,777,938.96
  5. Step 5: Solve for x
    x = 191,563,777,938.96/685,057.20
  6. Step 6: Final answer
    x = 279,631.80

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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.