Home / 748,728.20-1,123,092.30-299,664.20

Finding the Fourth Proportional to 748,728.20, 1,123,092.30 and 299,664.20

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Solution

The fourth proportional to 748,728.20, 1,123,092.30 and 299,664.20 is: 449,496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,728.20 : 1,123,092.30 = 299,664.20 : x
  2. Step 2: Convert to fraction form
    748,728.20/1,123,092.30 = 299,664.20/x
  3. Step 3: Cross multiply
    748,728.20x = 1,123,092.30 × 299,664.20
  4. Step 4: Simplify right side
    748,728.20x = 336,550,555,605.66
  5. Step 5: Solve for x
    x = 336,550,555,605.66/748,728.20
  6. Step 6: Final answer
    x = 449,496.30

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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.