Home / 789,712.31-1,089,803.06-427,136.19

Finding the Fourth Proportional to 789,712.31, 1,089,803.06 and 427,136.19

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Solution

The fourth proportional to 789,712.31, 1,089,803.06 and 427,136.19 is: 589,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,712.31 : 1,089,803.06 = 427,136.19 : x
  2. Step 2: Convert to fraction form
    789,712.31/1,089,803.06 = 427,136.19/x
  3. Step 3: Cross multiply
    789,712.31x = 1,089,803.06 × 427,136.19
  4. Step 4: Simplify right side
    789,712.31x = 465,494,322,278.06
  5. Step 5: Solve for x
    x = 465,494,322,278.06/789,712.31
  6. Step 6: Final answer
    x = 589,447.98

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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.