Finding the Fourth Proportional to 1,915,279.69, 2,643,093.98 and 1,055,821.09
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Solution
The fourth proportional to 1,915,279.69, 2,643,093.98 and 1,055,821.09 is: 1,457,037.52
Step by Step Solution
- Step 1: Write the proportion equation
1,915,279.69 : 2,643,093.98 = 1,055,821.09 : x - Step 2: Convert to fraction form
1,915,279.69/2,643,093.98 = 1,055,821.09/x - Step 3: Cross multiply
1,915,279.69x = 2,643,093.98 × 1,055,821.09 - Step 4: Simplify right side
1,915,279.69x = 2,790,634,361,656.93 - Step 5: Solve for x
x = 2,790,634,361,656.93/1,915,279.69 - Step 6: Final answer
x = 1,457,037.52
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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.