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Finding the Fourth Proportional to 455,900.71, 629,229.92 and 300,579.29

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Solution

The fourth proportional to 455,900.71, 629,229.92 and 300,579.29 is: 414,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,900.71 : 629,229.92 = 300,579.29 : x
  2. Step 2: Convert to fraction form
    455,900.71/629,229.92 = 300,579.29/x
  3. Step 3: Cross multiply
    455,900.71x = 629,229.92 × 300,579.29
  4. Step 4: Simplify right side
    455,900.71x = 189,133,482,600.36
  5. Step 5: Solve for x
    x = 189,133,482,600.36/455,900.71
  6. Step 6: Final answer
    x = 414,856.74

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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.