Home / 431,433.60-647,369.20-290,897.04

Finding the Fourth Proportional to 431,433.60, 647,369.20 and 290,897.04

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Solution

The fourth proportional to 431,433.60, 647,369.20 and 290,897.04 is: 436,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,433.60 : 647,369.20 = 290,897.04 : x
  2. Step 2: Convert to fraction form
    431,433.60/647,369.20 = 290,897.04/x
  3. Step 3: Cross multiply
    431,433.60x = 647,369.20 × 290,897.04
  4. Step 4: Simplify right side
    431,433.60x = 188,317,784,067.17
  5. Step 5: Solve for x
    x = 188,317,784,067.17/431,433.60
  6. Step 6: Final answer
    x = 436,493.09

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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.