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Finding the Fourth Proportional to 389,184.78, 582,639.84 and 351,830.82

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Solution

The fourth proportional to 389,184.78, 582,639.84 and 351,830.82 is: 526,718.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,184.78 : 582,639.84 = 351,830.82 : x
  2. Step 2: Convert to fraction form
    389,184.78/582,639.84 = 351,830.82/x
  3. Step 3: Cross multiply
    389,184.78x = 582,639.84 × 351,830.82
  4. Step 4: Simplify right side
    389,184.78x = 204,990,652,671.87
  5. Step 5: Solve for x
    x = 204,990,652,671.87/389,184.78
  6. Step 6: Final answer
    x = 526,718.06

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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.