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Finding the Fourth Proportional to 455,712.40, 683,568.60 and 367,138.90

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Solution

The fourth proportional to 455,712.40, 683,568.60 and 367,138.90 is: 550,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,712.40 : 683,568.60 = 367,138.90 : x
  2. Step 2: Convert to fraction form
    455,712.40/683,568.60 = 367,138.90/x
  3. Step 3: Cross multiply
    455,712.40x = 683,568.60 × 367,138.90
  4. Step 4: Simplify right side
    455,712.40x = 250,964,623,878.54
  5. Step 5: Solve for x
    x = 250,964,623,878.54/455,712.40
  6. Step 6: Final answer
    x = 550,708.35

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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.