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Finding the Fourth Proportional to 419,377.92, 575,486.40 and 381,361.92

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Solution

The fourth proportional to 419,377.92, 575,486.40 and 381,361.92 is: 523,319.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,377.92 : 575,486.40 = 381,361.92 : x
  2. Step 2: Convert to fraction form
    419,377.92/575,486.40 = 381,361.92/x
  3. Step 3: Cross multiply
    419,377.92x = 575,486.40 × 381,361.92
  4. Step 4: Simplify right side
    419,377.92x = 219,468,598,437.89
  5. Step 5: Solve for x
    x = 219,468,598,437.89/419,377.92
  6. Step 6: Final answer
    x = 523,319.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.