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Finding the Fourth Proportional to 644,286.82, 889,091.44 and 357,825.36

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Solution

The fourth proportional to 644,286.82, 889,091.44 and 357,825.36 is: 493,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,286.82 : 889,091.44 = 357,825.36 : x
  2. Step 2: Convert to fraction form
    644,286.82/889,091.44 = 357,825.36/x
  3. Step 3: Cross multiply
    644,286.82x = 889,091.44 × 357,825.36
  4. Step 4: Simplify right side
    644,286.82x = 318,139,464,590.92
  5. Step 5: Solve for x
    x = 318,139,464,590.92/644,286.82
  6. Step 6: Final answer
    x = 493,785.46

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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.