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Finding the Fourth Proportional to 404,720.64, 557,995.26 and 331,855.05

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Solution

The fourth proportional to 404,720.64, 557,995.26 and 331,855.05 is: 457,534.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,720.64 : 557,995.26 = 331,855.05 : x
  2. Step 2: Convert to fraction form
    404,720.64/557,995.26 = 331,855.05/x
  3. Step 3: Cross multiply
    404,720.64x = 557,995.26 × 331,855.05
  4. Step 4: Simplify right side
    404,720.64x = 185,173,544,907.06
  5. Step 5: Solve for x
    x = 185,173,544,907.06/404,720.64
  6. Step 6: Final answer
    x = 457,534.23

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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.