Finding the Fourth Proportional to 786,990.72, 1,180,487.96 and 218,402.31
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Solution
The fourth proportional to 786,990.72, 1,180,487.96 and 218,402.31 is: 327,603.99
Step by Step Solution
- Step 1: Write the proportion equation
786,990.72 : 1,180,487.96 = 218,402.31 : x - Step 2: Convert to fraction form
786,990.72/1,180,487.96 = 218,402.31/x - Step 3: Cross multiply
786,990.72x = 1,180,487.96 × 218,402.31 - Step 4: Simplify right side
786,990.72x = 257,821,296,299.18 - Step 5: Solve for x
x = 257,821,296,299.18/786,990.72 - Step 6: Final answer
x = 327,603.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.