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Finding the Fourth Proportional to 576,912.80, 796,128 and 350,631.20

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Solution

The fourth proportional to 576,912.80, 796,128 and 350,631.20 is: 483,863.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,912.80 : 796,128 = 350,631.20 : x
  2. Step 2: Convert to fraction form
    576,912.80/796,128 = 350,631.20/x
  3. Step 3: Cross multiply
    576,912.80x = 796,128 × 350,631.20
  4. Step 4: Simplify right side
    576,912.80x = 279,147,315,993.60
  5. Step 5: Solve for x
    x = 279,147,315,993.60/576,912.80
  6. Step 6: Final answer
    x = 483,863.97

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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.