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Finding the Fourth Proportional to 789,361.64, 1,089,302.82 and 431,665.64

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Solution

The fourth proportional to 789,361.64, 1,089,302.82 and 431,665.64 is: 595,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,361.64 : 1,089,302.82 = 431,665.64 : x
  2. Step 2: Convert to fraction form
    789,361.64/1,089,302.82 = 431,665.64/x
  3. Step 3: Cross multiply
    789,361.64x = 1,089,302.82 × 431,665.64
  4. Step 4: Simplify right side
    789,361.64x = 470,214,598,949.11
  5. Step 5: Solve for x
    x = 470,214,598,949.11/789,361.64
  6. Step 6: Final answer
    x = 595,689.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.