Home / 428,912.58-642,919.94-144,504.85

Finding the Fourth Proportional to 428,912.58, 642,919.94 and 144,504.85

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Solution

The fourth proportional to 428,912.58, 642,919.94 and 144,504.85 is: 216,606.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,912.58 : 642,919.94 = 144,504.85 : x
  2. Step 2: Convert to fraction form
    428,912.58/642,919.94 = 144,504.85/x
  3. Step 3: Cross multiply
    428,912.58x = 642,919.94 × 144,504.85
  4. Step 4: Simplify right side
    428,912.58x = 92,905,049,491.71
  5. Step 5: Solve for x
    x = 92,905,049,491.71/428,912.58
  6. Step 6: Final answer
    x = 216,606.03

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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.