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Finding the Fourth Proportional to 536,589.11, 740,331.49 and 321,650.75

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Solution

The fourth proportional to 536,589.11, 740,331.49 and 321,650.75 is: 443,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,589.11 : 740,331.49 = 321,650.75 : x
  2. Step 2: Convert to fraction form
    536,589.11/740,331.49 = 321,650.75/x
  3. Step 3: Cross multiply
    536,589.11x = 740,331.49 × 321,650.75
  4. Step 4: Simplify right side
    536,589.11x = 238,128,179,007.12
  5. Step 5: Solve for x
    x = 238,128,179,007.12/536,589.11
  6. Step 6: Final answer
    x = 443,781.24

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Double scale
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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.