Finding the Fourth Proportional to 831,309.31, 1,147,206.16 and 449,336.09
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Solution
The fourth proportional to 831,309.31, 1,147,206.16 and 449,336.09 is: 620,083.43
Step by Step Solution
- Step 1: Write the proportion equation
831,309.31 : 1,147,206.16 = 449,336.09 : x - Step 2: Convert to fraction form
831,309.31/1,147,206.16 = 449,336.09/x - Step 3: Cross multiply
831,309.31x = 1,147,206.16 × 449,336.09 - Step 4: Simplify right side
831,309.31x = 515,481,130,358.31 - Step 5: Solve for x
x = 515,481,130,358.31/831,309.31 - Step 6: Final answer
x = 620,083.43
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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.