Finding the Fourth Proportional to 831,369.92, 1,147,676.70 and 487,158.07
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Solution
The fourth proportional to 831,369.92, 1,147,676.70 and 487,158.07 is: 672,504.45
Step by Step Solution
- Step 1: Write the proportion equation
831,369.92 : 1,147,676.70 = 487,158.07 : x - Step 2: Convert to fraction form
831,369.92/1,147,676.70 = 487,158.07/x - Step 3: Cross multiply
831,369.92x = 1,147,676.70 × 487,158.07 - Step 4: Simplify right side
831,369.92x = 559,099,965,895.38 - Step 5: Solve for x
x = 559,099,965,895.38/831,369.92 - Step 6: Final answer
x = 672,504.45
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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.