Home / 789,107.86-1,089,331.23-462,375.46

Finding the Fourth Proportional to 789,107.86, 1,089,331.23 and 462,375.46

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Solution

The fourth proportional to 789,107.86, 1,089,331.23 and 462,375.46 is: 638,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,107.86 : 1,089,331.23 = 462,375.46 : x
  2. Step 2: Convert to fraction form
    789,107.86/1,089,331.23 = 462,375.46/x
  3. Step 3: Cross multiply
    789,107.86x = 1,089,331.23 × 462,375.46
  4. Step 4: Simplify right side
    789,107.86x = 503,680,028,563.62
  5. Step 5: Solve for x
    x = 503,680,028,563.62/789,107.86
  6. Step 6: Final answer
    x = 638,290.47

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Double scale
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Similar ratio
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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.