Home / 445,933.20-668,899.80-396,944.40

Finding the Fourth Proportional to 445,933.20, 668,899.80 and 396,944.40

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Solution

The fourth proportional to 445,933.20, 668,899.80 and 396,944.40 is: 595,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,933.20 : 668,899.80 = 396,944.40 : x
  2. Step 2: Convert to fraction form
    445,933.20/668,899.80 = 396,944.40/x
  3. Step 3: Cross multiply
    445,933.20x = 668,899.80 × 396,944.40
  4. Step 4: Simplify right side
    445,933.20x = 265,516,029,771.12
  5. Step 5: Solve for x
    x = 265,516,029,771.12/445,933.20
  6. Step 6: Final answer
    x = 595,416.60

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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.