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Finding the Fourth Proportional to 667,458.40, 999,632.40 and 455,951.20

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Solution

The fourth proportional to 667,458.40, 999,632.40 and 455,951.20 is: 682,864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,458.40 : 999,632.40 = 455,951.20 : x
  2. Step 2: Convert to fraction form
    667,458.40/999,632.40 = 455,951.20/x
  3. Step 3: Cross multiply
    667,458.40x = 999,632.40 × 455,951.20
  4. Step 4: Simplify right side
    667,458.40x = 455,783,592,338.88
  5. Step 5: Solve for x
    x = 455,783,592,338.88/667,458.40
  6. Step 6: Final answer
    x = 682,864.42

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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.