Home / 678,910.92-1,016,815.14-324,173.40

Finding the Fourth Proportional to 678,910.92, 1,016,815.14 and 324,173.40

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Solution

The fourth proportional to 678,910.92, 1,016,815.14 and 324,173.40 is: 485,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,910.92 : 1,016,815.14 = 324,173.40 : x
  2. Step 2: Convert to fraction form
    678,910.92/1,016,815.14 = 324,173.40/x
  3. Step 3: Cross multiply
    678,910.92x = 1,016,815.14 × 324,173.40
  4. Step 4: Simplify right side
    678,910.92x = 329,624,421,105.28
  5. Step 5: Solve for x
    x = 329,624,421,105.28/678,910.92
  6. Step 6: Final answer
    x = 485,519.40

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