Finding the Fourth Proportional to 512,990.41, 769,485.81 and 133,910.09
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Solution
The fourth proportional to 512,990.41, 769,485.81 and 133,910.09 is: 200,865.19
Step by Step Solution
- Step 1: Write the proportion equation
512,990.41 : 769,485.81 = 133,910.09 : x - Step 2: Convert to fraction form
512,990.41/769,485.81 = 133,910.09/x - Step 3: Cross multiply
512,990.41x = 769,485.81 × 133,910.09 - Step 4: Simplify right side
512,990.41x = 103,041,914,070.82 - Step 5: Solve for x
x = 103,041,914,070.82/512,990.41 - Step 6: Final answer
x = 200,865.19
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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.