Home / 685,363.20-1,028,044.80-508,216.20

Finding the Fourth Proportional to 685,363.20, 1,028,044.80 and 508,216.20

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Solution

The fourth proportional to 685,363.20, 1,028,044.80 and 508,216.20 is: 762,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,363.20 : 1,028,044.80 = 508,216.20 : x
  2. Step 2: Convert to fraction form
    685,363.20/1,028,044.80 = 508,216.20/x
  3. Step 3: Cross multiply
    685,363.20x = 1,028,044.80 × 508,216.20
  4. Step 4: Simplify right side
    685,363.20x = 522,469,021,685.76
  5. Step 5: Solve for x
    x = 522,469,021,685.76/685,363.20
  6. Step 6: Final answer
    x = 762,324.30

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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.