Home / 1,098,114.30-1,647,171.45-388,136.70

Finding the Fourth Proportional to 1,098,114.30, 1,647,171.45 and 388,136.70

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Solution

The fourth proportional to 1,098,114.30, 1,647,171.45 and 388,136.70 is: 582,205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,114.30 : 1,647,171.45 = 388,136.70 : x
  2. Step 2: Convert to fraction form
    1,098,114.30/1,647,171.45 = 388,136.70/x
  3. Step 3: Cross multiply
    1,098,114.30x = 1,647,171.45 × 388,136.70
  4. Step 4: Simplify right side
    1,098,114.30x = 639,327,690,937.22
  5. Step 5: Solve for x
    x = 639,327,690,937.22/1,098,114.30
  6. Step 6: Final answer
    x = 582,205.05

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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.