Home / 685,718.40-1,028,460.96-186,965.76

Finding the Fourth Proportional to 685,718.40, 1,028,460.96 and 186,965.76

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Solution

The fourth proportional to 685,718.40, 1,028,460.96 and 186,965.76 is: 280,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,718.40 : 1,028,460.96 = 186,965.76 : x
  2. Step 2: Convert to fraction form
    685,718.40/1,028,460.96 = 186,965.76/x
  3. Step 3: Cross multiply
    685,718.40x = 1,028,460.96 × 186,965.76
  4. Step 4: Simplify right side
    685,718.40x = 192,286,985,016.73
  5. Step 5: Solve for x
    x = 192,286,985,016.73/685,718.40
  6. Step 6: Final answer
    x = 280,416.84

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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.