Finding the Fourth Proportional to 1,278,404.13, 1,917,107.84 and 479,249.63
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Solution
The fourth proportional to 1,278,404.13, 1,917,107.84 and 479,249.63 is: 718,687.61
Step by Step Solution
- Step 1: Write the proportion equation
1,278,404.13 : 1,917,107.84 = 479,249.63 : x - Step 2: Convert to fraction form
1,278,404.13/1,917,107.84 = 479,249.63/x - Step 3: Cross multiply
1,278,404.13x = 1,917,107.84 × 479,249.63 - Step 4: Simplify right side
1,278,404.13x = 918,773,211,008.31 - Step 5: Solve for x
x = 918,773,211,008.31/1,278,404.13 - Step 6: Final answer
x = 718,687.61
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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.