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Finding the Fourth Proportional to 572,252.75, 789,778.70 and 330,535.05

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Solution

The fourth proportional to 572,252.75, 789,778.70 and 330,535.05 is: 456,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,252.75 : 789,778.70 = 330,535.05 : x
  2. Step 2: Convert to fraction form
    572,252.75/789,778.70 = 330,535.05/x
  3. Step 3: Cross multiply
    572,252.75x = 789,778.70 × 330,535.05
  4. Step 4: Simplify right side
    572,252.75x = 261,049,540,577.86
  5. Step 5: Solve for x
    x = 261,049,540,577.86/572,252.75
  6. Step 6: Final answer
    x = 456,178.74

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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.