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Finding the Fourth Proportional to 789,808.16, 1,089,589.04 and 462,955.48

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Solution

The fourth proportional to 789,808.16, 1,089,589.04 and 462,955.48 is: 638,675.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,808.16 : 1,089,589.04 = 462,955.48 : x
  2. Step 2: Convert to fraction form
    789,808.16/1,089,589.04 = 462,955.48/x
  3. Step 3: Cross multiply
    789,808.16x = 1,089,589.04 × 462,955.48
  4. Step 4: Simplify right side
    789,808.16x = 504,431,217,015.94
  5. Step 5: Solve for x
    x = 504,431,217,015.94/789,808.16
  6. Step 6: Final answer
    x = 638,675.62

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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.