Finding the Fourth Proportional to 990,417.58, 1,366,809.39 and 554,853.75
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Solution
The fourth proportional to 990,417.58, 1,366,809.39 and 554,853.75 is: 765,716.73
Step by Step Solution
- Step 1: Write the proportion equation
990,417.58 : 1,366,809.39 = 554,853.75 : x - Step 2: Convert to fraction form
990,417.58/1,366,809.39 = 554,853.75/x - Step 3: Cross multiply
990,417.58x = 1,366,809.39 × 554,853.75 - Step 4: Simplify right side
990,417.58x = 758,379,310,451.18 - Step 5: Solve for x
x = 758,379,310,451.18/990,417.58 - Step 6: Final answer
x = 765,716.73
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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.