Finding the Fourth Proportional to 831,877.42, 1,147,990.84 and 449,904.20
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Solution
The fourth proportional to 831,877.42, 1,147,990.84 and 449,904.20 is: 620,867.80
Step by Step Solution
- Step 1: Write the proportion equation
831,877.42 : 1,147,990.84 = 449,904.20 : x - Step 2: Convert to fraction form
831,877.42/1,147,990.84 = 449,904.20/x - Step 3: Cross multiply
831,877.42x = 1,147,990.84 × 449,904.20 - Step 4: Simplify right side
831,877.42x = 516,485,900,477.53 - Step 5: Solve for x
x = 516,485,900,477.53/831,877.42 - Step 6: Final answer
x = 620,867.80
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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.