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Finding the Fourth Proportional to 571,847.60, 789,134.46 and 330,122

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Solution

The fourth proportional to 571,847.60, 789,134.46 and 330,122 is: 455,559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,847.60 : 789,134.46 = 330,122 : x
  2. Step 2: Convert to fraction form
    571,847.60/789,134.46 = 330,122/x
  3. Step 3: Cross multiply
    571,847.60x = 789,134.46 × 330,122
  4. Step 4: Simplify right side
    571,847.60x = 260,510,646,204.12
  5. Step 5: Solve for x
    x = 260,510,646,204.12/571,847.60
  6. Step 6: Final answer
    x = 455,559.57

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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.