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Finding the Fourth Proportional to 622,388.78, 858,683.81 and 377,448.42

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Solution

The fourth proportional to 622,388.78, 858,683.81 and 377,448.42 is: 520,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,388.78 : 858,683.81 = 377,448.42 : x
  2. Step 2: Convert to fraction form
    622,388.78/858,683.81 = 377,448.42/x
  3. Step 3: Cross multiply
    622,388.78x = 858,683.81 × 377,448.42
  4. Step 4: Simplify right side
    622,388.78x = 324,108,848,307.70
  5. Step 5: Solve for x
    x = 324,108,848,307.70/622,388.78
  6. Step 6: Final answer
    x = 520,749.83

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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.