Finding the Fourth Proportional to 1,211,816.16, 1,672,402.68 and 668,049.12
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Solution
The fourth proportional to 1,211,816.16, 1,672,402.68 and 668,049.12 is: 921,960.92
Step by Step Solution
- Step 1: Write the proportion equation
1,211,816.16 : 1,672,402.68 = 668,049.12 : x - Step 2: Convert to fraction form
1,211,816.16/1,672,402.68 = 668,049.12/x - Step 3: Cross multiply
1,211,816.16x = 1,672,402.68 × 668,049.12 - Step 4: Simplify right side
1,211,816.16x = 1,117,247,138,659.64 - Step 5: Solve for x
x = 1,117,247,138,659.64/1,211,816.16 - Step 6: Final answer
x = 921,960.92
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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.