Finding the Fourth Proportional to 1,278,422.88, 1,917,135.93 and 479,268.39
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Solution
The fourth proportional to 1,278,422.88, 1,917,135.93 and 479,268.39 is: 718,715.74
Step by Step Solution
- Step 1: Write the proportion equation
1,278,422.88 : 1,917,135.93 = 479,268.39 : x - Step 2: Convert to fraction form
1,278,422.88/1,917,135.93 = 479,268.39/x - Step 3: Cross multiply
1,278,422.88x = 1,917,135.93 × 479,268.39 - Step 4: Simplify right side
1,278,422.88x = 918,822,650,582.25 - Step 5: Solve for x
x = 918,822,650,582.25/1,278,422.88 - Step 6: Final answer
x = 718,715.74
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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.