Finding the Fourth Proportional to 831,837.97, 1,147,989.55 and 469,129.49
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Solution
The fourth proportional to 831,837.97, 1,147,989.55 and 469,129.49 is: 647,428.66
Step by Step Solution
- Step 1: Write the proportion equation
831,837.97 : 1,147,989.55 = 469,129.49 : x - Step 2: Convert to fraction form
831,837.97/1,147,989.55 = 469,129.49/x - Step 3: Cross multiply
831,837.97x = 1,147,989.55 × 469,129.49 - Step 4: Simplify right side
831,837.97x = 538,555,744,031.23 - Step 5: Solve for x
x = 538,555,744,031.23/831,837.97 - Step 6: Final answer
x = 647,428.66
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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.