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Finding the Fourth Proportional to 608,923.92, 840,034.64 and 394,133

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Solution

The fourth proportional to 608,923.92, 840,034.64 and 394,133 is: 543,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,923.92 : 840,034.64 = 394,133 : x
  2. Step 2: Convert to fraction form
    608,923.92/840,034.64 = 394,133/x
  3. Step 3: Cross multiply
    608,923.92x = 840,034.64 × 394,133
  4. Step 4: Simplify right side
    608,923.92x = 331,085,372,767.12
  5. Step 5: Solve for x
    x = 331,085,372,767.12/608,923.92
  6. Step 6: Final answer
    x = 543,722.07

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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.