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Finding the Fourth Proportional to 455,958.64, 628,896.58 and 320,022.92

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Solution

The fourth proportional to 455,958.64, 628,896.58 and 320,022.92 is: 441,402.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,958.64 : 628,896.58 = 320,022.92 : x
  2. Step 2: Convert to fraction form
    455,958.64/628,896.58 = 320,022.92/x
  3. Step 3: Cross multiply
    455,958.64x = 628,896.58 × 320,022.92
  4. Step 4: Simplify right side
    455,958.64x = 201,261,319,909.61
  5. Step 5: Solve for x
    x = 201,261,319,909.61/455,958.64
  6. Step 6: Final answer
    x = 441,402.58

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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.