Finding the Fourth Proportional to 808,218.10, 1,213,639.35 and 543,153.70
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Solution
The fourth proportional to 808,218.10, 1,213,639.35 and 543,153.70 is: 815,612.40
Step by Step Solution
- Step 1: Write the proportion equation
808,218.10 : 1,213,639.35 = 543,153.70 : x - Step 2: Convert to fraction form
808,218.10/1,213,639.35 = 543,153.70/x - Step 3: Cross multiply
808,218.10x = 1,213,639.35 × 543,153.70 - Step 4: Simplify right side
808,218.10x = 659,192,703,418.10 - Step 5: Solve for x
x = 659,192,703,418.10/808,218.10 - Step 6: Final answer
x = 815,612.40
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1.5x scale
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.