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Finding the Fourth Proportional to 542,817.80, 814,226.70 and 492,954.20

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Solution

The fourth proportional to 542,817.80, 814,226.70 and 492,954.20 is: 739,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,817.80 : 814,226.70 = 492,954.20 : x
  2. Step 2: Convert to fraction form
    542,817.80/814,226.70 = 492,954.20/x
  3. Step 3: Cross multiply
    542,817.80x = 814,226.70 × 492,954.20
  4. Step 4: Simplify right side
    542,817.80x = 401,376,471,517.14
  5. Step 5: Solve for x
    x = 401,376,471,517.14/542,817.80
  6. Step 6: Final answer
    x = 739,431.30

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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.