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Finding the Fourth Proportional to 663,994.80, 994,804.20 and 403,858.80

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Solution

The fourth proportional to 663,994.80, 994,804.20 and 403,858.80 is: 605,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,994.80 : 994,804.20 = 403,858.80 : x
  2. Step 2: Convert to fraction form
    663,994.80/994,804.20 = 403,858.80/x
  3. Step 3: Cross multiply
    663,994.80x = 994,804.20 × 403,858.80
  4. Step 4: Simplify right side
    663,994.80x = 401,760,430,446.96
  5. Step 5: Solve for x
    x = 401,760,430,446.96/663,994.80
  6. Step 6: Final answer
    x = 605,065.63

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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.