Finding the Fourth Proportional to 1,515,642.25, 2,091,586.49 and 836,578.93
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Solution
The fourth proportional to 1,515,642.25, 2,091,586.49 and 836,578.93 is: 1,154,479.03
Step by Step Solution
- Step 1: Write the proportion equation
1,515,642.25 : 2,091,586.49 = 836,578.93 : x - Step 2: Convert to fraction form
1,515,642.25/2,091,586.49 = 836,578.93/x - Step 3: Cross multiply
1,515,642.25x = 2,091,586.49 × 836,578.93 - Step 4: Simplify right side
1,515,642.25x = 1,749,777,187,806.66 - Step 5: Solve for x
x = 1,749,777,187,806.66/1,515,642.25 - Step 6: Final answer
x = 1,154,479.03
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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.