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Finding the Fourth Proportional to 571,956.42, 789,369.86 and 330,238.59

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Solution

The fourth proportional to 571,956.42, 789,369.86 and 330,238.59 is: 455,769.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,956.42 : 789,369.86 = 330,238.59 : x
  2. Step 2: Convert to fraction form
    571,956.42/789,369.86 = 330,238.59/x
  3. Step 3: Cross multiply
    571,956.42x = 789,369.86 × 330,238.59
  4. Step 4: Simplify right side
    571,956.42x = 260,680,385,930.28
  5. Step 5: Solve for x
    x = 260,680,385,930.28/571,956.42
  6. Step 6: Final answer
    x = 455,769.66

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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.