Home / 815,816.20-1,223,724.30-437,902.60

Finding the Fourth Proportional to 815,816.20, 1,223,724.30 and 437,902.60

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Solution

The fourth proportional to 815,816.20, 1,223,724.30 and 437,902.60 is: 656,853.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,816.20 : 1,223,724.30 = 437,902.60 : x
  2. Step 2: Convert to fraction form
    815,816.20/1,223,724.30 = 437,902.60/x
  3. Step 3: Cross multiply
    815,816.20x = 1,223,724.30 × 437,902.60
  4. Step 4: Simplify right side
    815,816.20x = 535,872,052,653.18
  5. Step 5: Solve for x
    x = 535,872,052,653.18/815,816.20
  6. Step 6: Final answer
    x = 656,853.90

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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.