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Finding the Fourth Proportional to 608,927.92, 840,040.16 and 394,137

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Solution

The fourth proportional to 608,927.92, 840,040.16 and 394,137 is: 543,727.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,927.92 : 840,040.16 = 394,137 : x
  2. Step 2: Convert to fraction form
    608,927.92/840,040.16 = 394,137/x
  3. Step 3: Cross multiply
    608,927.92x = 840,040.16 × 394,137
  4. Step 4: Simplify right side
    608,927.92x = 331,090,908,541.92
  5. Step 5: Solve for x
    x = 331,090,908,541.92/608,927.92
  6. Step 6: Final answer
    x = 543,727.59

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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.