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Finding the Fourth Proportional to 384,735.40, 576,411.90 and 329,439.40

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Solution

The fourth proportional to 384,735.40, 576,411.90 and 329,439.40 is: 493,567.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,735.40 : 576,411.90 = 329,439.40 : x
  2. Step 2: Convert to fraction form
    384,735.40/576,411.90 = 329,439.40/x
  3. Step 3: Cross multiply
    384,735.40x = 576,411.90 × 329,439.40
  4. Step 4: Simplify right side
    384,735.40x = 189,892,790,488.86
  5. Step 5: Solve for x
    x = 189,892,790,488.86/384,735.40
  6. Step 6: Final answer
    x = 493,567.24

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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.