Home / 812,114.10-1,218,171.15-623,157.30

Finding the Fourth Proportional to 812,114.10, 1,218,171.15 and 623,157.30

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Solution

The fourth proportional to 812,114.10, 1,218,171.15 and 623,157.30 is: 934,735.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,114.10 : 1,218,171.15 = 623,157.30 : x
  2. Step 2: Convert to fraction form
    812,114.10/1,218,171.15 = 623,157.30/x
  3. Step 3: Cross multiply
    812,114.10x = 1,218,171.15 × 623,157.30
  4. Step 4: Simplify right side
    812,114.10x = 759,112,244,771.90
  5. Step 5: Solve for x
    x = 759,112,244,771.90/812,114.10
  6. Step 6: Final answer
    x = 934,735.95

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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.