Home / 667,321.30-1,000,506.39-312,141.70

Finding the Fourth Proportional to 667,321.30, 1,000,506.39 and 312,141.70

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Solution

The fourth proportional to 667,321.30, 1,000,506.39 and 312,141.70 is: 467,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,321.30 : 1,000,506.39 = 312,141.70 : x
  2. Step 2: Convert to fraction form
    667,321.30/1,000,506.39 = 312,141.70/x
  3. Step 3: Cross multiply
    667,321.30x = 1,000,506.39 × 312,141.70
  4. Step 4: Simplify right side
    667,321.30x = 312,299,765,435.46
  5. Step 5: Solve for x
    x = 312,299,765,435.46/667,321.30
  6. Step 6: Final answer
    x = 467,990.11

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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.