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Finding the Fourth Proportional to 608,710.79, 840,289.94 and 363,781.96

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Solution

The fourth proportional to 608,710.79, 840,289.94 and 363,781.96 is: 502,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,710.79 : 840,289.94 = 363,781.96 : x
  2. Step 2: Convert to fraction form
    608,710.79/840,289.94 = 363,781.96/x
  3. Step 3: Cross multiply
    608,710.79x = 840,289.94 × 363,781.96
  4. Step 4: Simplify right side
    608,710.79x = 305,682,318,786.03
  5. Step 5: Solve for x
    x = 305,682,318,786.03/608,710.79
  6. Step 6: Final answer
    x = 502,179.89

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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.