Home / 831,136.80-1,246,705.20-726,160.80

Finding the Fourth Proportional to 831,136.80, 1,246,705.20 and 726,160.80

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Solution

The fourth proportional to 831,136.80, 1,246,705.20 and 726,160.80 is: 1,089,241.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,136.80 : 1,246,705.20 = 726,160.80 : x
  2. Step 2: Convert to fraction form
    831,136.80/1,246,705.20 = 726,160.80/x
  3. Step 3: Cross multiply
    831,136.80x = 1,246,705.20 × 726,160.80
  4. Step 4: Simplify right side
    831,136.80x = 905,308,445,396.16
  5. Step 5: Solve for x
    x = 905,308,445,396.16/831,136.80
  6. Step 6: Final answer
    x = 1,089,241.20

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.