Home / 672,940.30-1,008,049.65-419,442.70

Finding the Fourth Proportional to 672,940.30, 1,008,049.65 and 419,442.70

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Solution

The fourth proportional to 672,940.30, 1,008,049.65 and 419,442.70 is: 628,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,940.30 : 1,008,049.65 = 419,442.70 : x
  2. Step 2: Convert to fraction form
    672,940.30/1,008,049.65 = 419,442.70/x
  3. Step 3: Cross multiply
    672,940.30x = 1,008,049.65 × 419,442.70
  4. Step 4: Simplify right side
    672,940.30x = 422,819,066,930.06
  5. Step 5: Solve for x
    x = 422,819,066,930.06/672,940.30
  6. Step 6: Final answer
    x = 628,315.87

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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.