Home / 789,657.32-1,089,727.09-427,081.21

Finding the Fourth Proportional to 789,657.32, 1,089,727.09 and 427,081.21

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Solution

The fourth proportional to 789,657.32, 1,089,727.09 and 427,081.21 is: 589,372.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,657.32 : 1,089,727.09 = 427,081.21 : x
  2. Step 2: Convert to fraction form
    789,657.32/1,089,727.09 = 427,081.21/x
  3. Step 3: Cross multiply
    789,657.32x = 1,089,727.09 × 427,081.21
  4. Step 4: Simplify right side
    789,657.32x = 465,401,960,374.96
  5. Step 5: Solve for x
    x = 465,401,960,374.96/789,657.32
  6. Step 6: Final answer
    x = 589,372.06

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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.