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Finding the Fourth Proportional to 455,901.91, 629,231.56 and 300,580.48

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Solution

The fourth proportional to 455,901.91, 629,231.56 and 300,580.48 is: 414,858.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,901.91 : 629,231.56 = 300,580.48 : x
  2. Step 2: Convert to fraction form
    455,901.91/629,231.56 = 300,580.48/x
  3. Step 3: Cross multiply
    455,901.91x = 629,231.56 × 300,580.48
  4. Step 4: Simplify right side
    455,901.91x = 189,134,719,686.89
  5. Step 5: Solve for x
    x = 189,134,719,686.89/455,901.91
  6. Step 6: Final answer
    x = 414,858.37

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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.