Finding the Fourth Proportional to 1,278,354.51, 1,917,794.18 and 379,716.21
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Solution
The fourth proportional to 1,278,354.51, 1,917,794.18 and 379,716.21 is: 569,652.26
Step by Step Solution
- Step 1: Write the proportion equation
1,278,354.51 : 1,917,794.18 = 379,716.21 : x - Step 2: Convert to fraction form
1,278,354.51/1,917,794.18 = 379,716.21/x - Step 3: Cross multiply
1,278,354.51x = 1,917,794.18 × 379,716.21 - Step 4: Simplify right side
1,278,354.51x = 728,217,538,538.95 - Step 5: Solve for x
x = 728,217,538,538.95/1,278,354.51 - Step 6: Final answer
x = 569,652.26
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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.