Home / 426,949.94-640,529.99-300,836.49

Finding the Fourth Proportional to 426,949.94, 640,529.99 and 300,836.49

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Solution

The fourth proportional to 426,949.94, 640,529.99 and 300,836.49 is: 451,328.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,949.94 : 640,529.99 = 300,836.49 : x
  2. Step 2: Convert to fraction form
    426,949.94/640,529.99 = 300,836.49/x
  3. Step 3: Cross multiply
    426,949.94x = 640,529.99 × 300,836.49
  4. Step 4: Simplify right side
    426,949.94x = 192,694,793,931.34
  5. Step 5: Solve for x
    x = 192,694,793,931.34/426,949.94
  6. Step 6: Final answer
    x = 451,328.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.