Home / 430,760.91-645,559.08-311,022.66

Finding the Fourth Proportional to 430,760.91, 645,559.08 and 311,022.66

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Solution

The fourth proportional to 430,760.91, 645,559.08 and 311,022.66 is: 466,113.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,760.91 : 645,559.08 = 311,022.66 : x
  2. Step 2: Convert to fraction form
    430,760.91/645,559.08 = 311,022.66/x
  3. Step 3: Cross multiply
    430,760.91x = 645,559.08 × 311,022.66
  4. Step 4: Simplify right side
    430,760.91x = 200,783,505,252.77
  5. Step 5: Solve for x
    x = 200,783,505,252.77/430,760.91
  6. Step 6: Final answer
    x = 466,113.57

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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.