Home / 678,206.72-1,016,576.64-298,789.12

Finding the Fourth Proportional to 678,206.72, 1,016,576.64 and 298,789.12

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Solution

The fourth proportional to 678,206.72, 1,016,576.64 and 298,789.12 is: 447,860.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,206.72 : 1,016,576.64 = 298,789.12 : x
  2. Step 2: Convert to fraction form
    678,206.72/1,016,576.64 = 298,789.12/x
  3. Step 3: Cross multiply
    678,206.72x = 1,016,576.64 × 298,789.12
  4. Step 4: Simplify right side
    678,206.72x = 303,742,039,678.16
  5. Step 5: Solve for x
    x = 303,742,039,678.16/678,206.72
  6. Step 6: Final answer
    x = 447,860.56

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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.