Home / 690,691.82-1,036,148.45-291,391.42

Finding the Fourth Proportional to 690,691.82, 1,036,148.45 and 291,391.42

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Solution

The fourth proportional to 690,691.82, 1,036,148.45 and 291,391.42 is: 437,133.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,691.82 : 1,036,148.45 = 291,391.42 : x
  2. Step 2: Convert to fraction form
    690,691.82/1,036,148.45 = 291,391.42/x
  3. Step 3: Cross multiply
    690,691.82x = 1,036,148.45 × 291,391.42
  4. Step 4: Simplify right side
    690,691.82x = 301,924,762,995.56
  5. Step 5: Solve for x
    x = 301,924,762,995.56/690,691.82
  6. Step 6: Final answer
    x = 437,133.83

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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.