Home / 789,455.22-1,089,382.38-445,272.18

Finding the Fourth Proportional to 789,455.22, 1,089,382.38 and 445,272.18

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Solution

The fourth proportional to 789,455.22, 1,089,382.38 and 445,272.18 is: 614,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,455.22 : 1,089,382.38 = 445,272.18 : x
  2. Step 2: Convert to fraction form
    789,455.22/1,089,382.38 = 445,272.18/x
  3. Step 3: Cross multiply
    789,455.22x = 1,089,382.38 × 445,272.18
  4. Step 4: Simplify right side
    789,455.22x = 485,071,667,196.19
  5. Step 5: Solve for x
    x = 485,071,667,196.19/789,455.22
  6. Step 6: Final answer
    x = 614,438.48

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Double scale
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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.