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Finding the Fourth Proportional to 421,841.96, 582,413.60 and 376,441.87

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Solution

The fourth proportional to 421,841.96, 582,413.60 and 376,441.87 is: 519,732.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,841.96 : 582,413.60 = 376,441.87 : x
  2. Step 2: Convert to fraction form
    421,841.96/582,413.60 = 376,441.87/x
  3. Step 3: Cross multiply
    421,841.96x = 582,413.60 × 376,441.87
  4. Step 4: Simplify right side
    421,841.96x = 219,244,864,697.43
  5. Step 5: Solve for x
    x = 219,244,864,697.43/421,841.96
  6. Step 6: Final answer
    x = 519,732.24

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1.5x scale

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.