Finding the Fourth Proportional to 831,912.21, 1,247,868.36 and 270,946.71
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Solution
The fourth proportional to 831,912.21, 1,247,868.36 and 270,946.71 is: 406,420.08
Step by Step Solution
- Step 1: Write the proportion equation
831,912.21 : 1,247,868.36 = 270,946.71 : x - Step 2: Convert to fraction form
831,912.21/1,247,868.36 = 270,946.71/x - Step 3: Cross multiply
831,912.21x = 1,247,868.36 × 270,946.71 - Step 4: Simplify right side
831,912.21x = 338,105,826,655.10 - Step 5: Solve for x
x = 338,105,826,655.10/831,912.21 - Step 6: Final answer
x = 406,420.08
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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.