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Finding the Fourth Proportional to 644,198.22, 888,996.33 and 357,717.42

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Solution

The fourth proportional to 644,198.22, 888,996.33 and 357,717.42 is: 493,651.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,198.22 : 888,996.33 = 357,717.42 : x
  2. Step 2: Convert to fraction form
    644,198.22/888,996.33 = 357,717.42/x
  3. Step 3: Cross multiply
    644,198.22x = 888,996.33 × 357,717.42
  4. Step 4: Simplify right side
    644,198.22x = 318,009,473,557.07
  5. Step 5: Solve for x
    x = 318,009,473,557.07/644,198.22
  6. Step 6: Final answer
    x = 493,651.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.