Home / 685,366.20-1,028,049.30-508,219.20

Finding the Fourth Proportional to 685,366.20, 1,028,049.30 and 508,219.20

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Solution

The fourth proportional to 685,366.20, 1,028,049.30 and 508,219.20 is: 762,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,366.20 : 1,028,049.30 = 508,219.20 : x
  2. Step 2: Convert to fraction form
    685,366.20/1,028,049.30 = 508,219.20/x
  3. Step 3: Cross multiply
    685,366.20x = 1,028,049.30 × 508,219.20
  4. Step 4: Simplify right side
    685,366.20x = 522,474,392,806.56
  5. Step 5: Solve for x
    x = 522,474,392,806.56/685,366.20
  6. Step 6: Final answer
    x = 762,328.80

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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.