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Finding the Fourth Proportional to 576,080.32, 794,990.64 and 321,431.44

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Solution

The fourth proportional to 576,080.32, 794,990.64 and 321,431.44 is: 443,575.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,080.32 : 794,990.64 = 321,431.44 : x
  2. Step 2: Convert to fraction form
    576,080.32/794,990.64 = 321,431.44/x
  3. Step 3: Cross multiply
    576,080.32x = 794,990.64 × 321,431.44
  4. Step 4: Simplify right side
    576,080.32x = 255,534,986,201.72
  5. Step 5: Solve for x
    x = 255,534,986,201.72/576,080.32
  6. Step 6: Final answer
    x = 443,575.27

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1.5x scale

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.