Finding the Fourth Proportional to 831,338.48, 1,247,337.12 and 432,230.96
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Solution
The fourth proportional to 831,338.48, 1,247,337.12 and 432,230.96 is: 648,517.70
Step by Step Solution
- Step 1: Write the proportion equation
831,338.48 : 1,247,337.12 = 432,230.96 : x - Step 2: Convert to fraction form
831,338.48/1,247,337.12 = 432,230.96/x - Step 3: Cross multiply
831,338.48x = 1,247,337.12 × 432,230.96 - Step 4: Simplify right side
831,338.48x = 539,137,720,821.24 - Step 5: Solve for x
x = 539,137,720,821.24/831,338.48 - Step 6: Final answer
x = 648,517.70
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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.