Home / 789,448.68-1,089,439.92-426,872.34

Finding the Fourth Proportional to 789,448.68, 1,089,439.92 and 426,872.34

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Solution

The fourth proportional to 789,448.68, 1,089,439.92 and 426,872.34 is: 589,084.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,448.68 : 1,089,439.92 = 426,872.34 : x
  2. Step 2: Convert to fraction form
    789,448.68/1,089,439.92 = 426,872.34/x
  3. Step 3: Cross multiply
    789,448.68x = 1,089,439.92 × 426,872.34
  4. Step 4: Simplify right side
    789,448.68x = 465,051,767,939.81
  5. Step 5: Solve for x
    x = 465,051,767,939.81/789,448.68
  6. Step 6: Final answer
    x = 589,084.23

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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.