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Finding the Fourth Proportional to 389,366.70, 584,548.26 and 330,575.94

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Solution

The fourth proportional to 389,366.70, 584,548.26 and 330,575.94 is: 496,286.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,366.70 : 584,548.26 = 330,575.94 : x
  2. Step 2: Convert to fraction form
    389,366.70/584,548.26 = 330,575.94/x
  3. Step 3: Cross multiply
    389,366.70x = 584,548.26 × 330,575.94
  4. Step 4: Simplify right side
    389,366.70x = 193,237,590,524.86
  5. Step 5: Solve for x
    x = 193,237,590,524.86/389,366.70
  6. Step 6: Final answer
    x = 496,286.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.