Finding the Fourth Proportional to 1,382,108.88, 1,907,236.68 and 778,458
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Solution
The fourth proportional to 1,382,108.88, 1,907,236.68 and 778,458 is: 1,074,230.60
Step by Step Solution
- Step 1: Write the proportion equation
1,382,108.88 : 1,907,236.68 = 778,458 : x - Step 2: Convert to fraction form
1,382,108.88/1,907,236.68 = 778,458/x - Step 3: Cross multiply
1,382,108.88x = 1,907,236.68 × 778,458 - Step 4: Simplify right side
1,382,108.88x = 1,484,703,651,439.44 - Step 5: Solve for x
x = 1,484,703,651,439.44/1,382,108.88 - Step 6: Final answer
x = 1,074,230.60
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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.