Home / 1,021,429.20-1,528,207.20-667,135.20

Finding the Fourth Proportional to 1,021,429.20, 1,528,207.20 and 667,135.20

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Solution

The fourth proportional to 1,021,429.20, 1,528,207.20 and 667,135.20 is: 998,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,429.20 : 1,528,207.20 = 667,135.20 : x
  2. Step 2: Convert to fraction form
    1,021,429.20/1,528,207.20 = 667,135.20/x
  3. Step 3: Cross multiply
    1,021,429.20x = 1,528,207.20 × 667,135.20
  4. Step 4: Simplify right side
    1,021,429.20x = 1,019,520,816,013.44
  5. Step 5: Solve for x
    x = 1,019,520,816,013.44/1,021,429.20
  6. Step 6: Final answer
    x = 998,131.65

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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.