Home / 685,237.20-1,027,920.60-186,601.20

Finding the Fourth Proportional to 685,237.20, 1,027,920.60 and 186,601.20

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Solution

The fourth proportional to 685,237.20, 1,027,920.60 and 186,601.20 is: 279,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,237.20 : 1,027,920.60 = 186,601.20 : x
  2. Step 2: Convert to fraction form
    685,237.20/1,027,920.60 = 186,601.20/x
  3. Step 3: Cross multiply
    685,237.20x = 1,027,920.60 × 186,601.20
  4. Step 4: Simplify right side
    685,237.20x = 191,811,217,464.72
  5. Step 5: Solve for x
    x = 191,811,217,464.72/685,237.20
  6. Step 6: Final answer
    x = 279,919.45

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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.