Finding the Fourth Proportional to 831,611.88, 1,147,623.66 and 449,637.75
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Solution
The fourth proportional to 831,611.88, 1,147,623.66 and 449,637.75 is: 620,499.70
Step by Step Solution
- Step 1: Write the proportion equation
831,611.88 : 1,147,623.66 = 449,637.75 : x - Step 2: Convert to fraction form
831,611.88/1,147,623.66 = 449,637.75/x - Step 3: Cross multiply
831,611.88x = 1,147,623.66 × 449,637.75 - Step 4: Simplify right side
831,611.88x = 516,014,920,329.17 - Step 5: Solve for x
x = 516,014,920,329.17/831,611.88 - Step 6: Final answer
x = 620,499.70
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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.