Home / 663,981.44-916,286.40-362,168.96

Finding the Fourth Proportional to 663,981.44, 916,286.40 and 362,168.96

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Solution

The fourth proportional to 663,981.44, 916,286.40 and 362,168.96 is: 499,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,981.44 : 916,286.40 = 362,168.96 : x
  2. Step 2: Convert to fraction form
    663,981.44/916,286.40 = 362,168.96/x
  3. Step 3: Cross multiply
    663,981.44x = 916,286.40 × 362,168.96
  4. Step 4: Simplify right side
    663,981.44x = 331,850,492,550.14
  5. Step 5: Solve for x
    x = 331,850,492,550.14/663,981.44
  6. Step 6: Final answer
    x = 499,788.81

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.