Home / 789,856.09-1,089,998.11-427,279.05

Finding the Fourth Proportional to 789,856.09, 1,089,998.11 and 427,279.05

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Solution

The fourth proportional to 789,856.09, 1,089,998.11 and 427,279.05 is: 589,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,856.09 : 1,089,998.11 = 427,279.05 : x
  2. Step 2: Convert to fraction form
    789,856.09/1,089,998.11 = 427,279.05/x
  3. Step 3: Cross multiply
    789,856.09x = 1,089,998.11 × 427,279.05
  4. Step 4: Simplify right side
    789,856.09x = 465,733,356,942.60
  5. Step 5: Solve for x
    x = 465,733,356,942.60/789,856.09
  6. Step 6: Final answer
    x = 589,643.31

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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.