Finding the Fourth Proportional to 831,345.92, 1,147,257.12 and 449,372.48
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Solution
The fourth proportional to 831,345.92, 1,147,257.12 and 449,372.48 is: 620,133.89
Step by Step Solution
- Step 1: Write the proportion equation
831,345.92 : 1,147,257.12 = 449,372.48 : x - Step 2: Convert to fraction form
831,345.92/1,147,257.12 = 449,372.48/x - Step 3: Cross multiply
831,345.92x = 1,147,257.12 × 449,372.48 - Step 4: Simplify right side
831,345.92x = 515,545,777,212.06 - Step 5: Solve for x
x = 515,545,777,212.06/831,345.92 - Step 6: Final answer
x = 620,133.89
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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.