Home / 667,145.80-1,000,780.21-217,869.02

Finding the Fourth Proportional to 667,145.80, 1,000,780.21 and 217,869.02

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Solution

The fourth proportional to 667,145.80, 1,000,780.21 and 217,869.02 is: 326,823.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,145.80 : 1,000,780.21 = 217,869.02 : x
  2. Step 2: Convert to fraction form
    667,145.80/1,000,780.21 = 217,869.02/x
  3. Step 3: Cross multiply
    667,145.80x = 1,000,780.21 × 217,869.02
  4. Step 4: Simplify right side
    667,145.80x = 218,038,998,584.19
  5. Step 5: Solve for x
    x = 218,038,998,584.19/667,145.80
  6. Step 6: Final answer
    x = 326,823.61

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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.