Finding the Fourth Proportional to 512,806.09, 769,209.69 and 133,726.49
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Solution
The fourth proportional to 512,806.09, 769,209.69 and 133,726.49 is: 200,589.88
Step by Step Solution
- Step 1: Write the proportion equation
512,806.09 : 769,209.69 = 133,726.49 : x - Step 2: Convert to fraction form
512,806.09/769,209.69 = 133,726.49/x - Step 3: Cross multiply
512,806.09x = 769,209.69 × 133,726.49 - Step 4: Simplify right side
512,806.09x = 102,863,713,506.40 - Step 5: Solve for x
x = 102,863,713,506.40/512,806.09 - Step 6: Final answer
x = 200,589.88
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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.