Finding the Fourth Proportional to 831,709.80, 1,247,564.70 and 660,467.70
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Solution
The fourth proportional to 831,709.80, 1,247,564.70 and 660,467.70 is: 990,701.55
Step by Step Solution
- Step 1: Write the proportion equation
831,709.80 : 1,247,564.70 = 660,467.70 : x - Step 2: Convert to fraction form
831,709.80/1,247,564.70 = 660,467.70/x - Step 3: Cross multiply
831,709.80x = 1,247,564.70 × 660,467.70 - Step 4: Simplify right side
831,709.80x = 823,976,188,010.19 - Step 5: Solve for x
x = 823,976,188,010.19/831,709.80 - Step 6: Final answer
x = 990,701.55
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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.