Home / 816,902.40-1,225,353.60-396,998.40

Finding the Fourth Proportional to 816,902.40, 1,225,353.60 and 396,998.40

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Solution

The fourth proportional to 816,902.40, 1,225,353.60 and 396,998.40 is: 595,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,902.40 : 1,225,353.60 = 396,998.40 : x
  2. Step 2: Convert to fraction form
    816,902.40/1,225,353.60 = 396,998.40/x
  3. Step 3: Cross multiply
    816,902.40x = 1,225,353.60 × 396,998.40
  4. Step 4: Simplify right side
    816,902.40x = 486,463,418,634.24
  5. Step 5: Solve for x
    x = 486,463,418,634.24/816,902.40
  6. Step 6: Final answer
    x = 595,497.60

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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.