Home / 667,299.80-1,000,474.23-312,120.20

Finding the Fourth Proportional to 667,299.80, 1,000,474.23 and 312,120.20

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Solution

The fourth proportional to 667,299.80, 1,000,474.23 and 312,120.20 is: 467,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,299.80 : 1,000,474.23 = 312,120.20 : x
  2. Step 2: Convert to fraction form
    667,299.80/1,000,474.23 = 312,120.20/x
  3. Step 3: Cross multiply
    667,299.80x = 1,000,474.23 × 312,120.20
  4. Step 4: Simplify right side
    667,299.80x = 312,268,216,762.45
  5. Step 5: Solve for x
    x = 312,268,216,762.45/667,299.80
  6. Step 6: Final answer
    x = 467,957.91

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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.