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Finding the Fourth Proportional to 608,925.92, 840,037.40 and 394,135

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Solution

The fourth proportional to 608,925.92, 840,037.40 and 394,135 is: 543,724.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,925.92 : 840,037.40 = 394,135 : x
  2. Step 2: Convert to fraction form
    608,925.92/840,037.40 = 394,135/x
  3. Step 3: Cross multiply
    608,925.92x = 840,037.40 × 394,135
  4. Step 4: Simplify right side
    608,925.92x = 331,088,140,649
  5. Step 5: Solve for x
    x = 331,088,140,649/608,925.92
  6. Step 6: Final answer
    x = 543,724.83

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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.