Finding the Fourth Proportional to 919,115.30, 1,378,716.15 and 288,049.70
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Solution
The fourth proportional to 919,115.30, 1,378,716.15 and 288,049.70 is: 432,088.09
Step by Step Solution
- Step 1: Write the proportion equation
919,115.30 : 1,378,716.15 = 288,049.70 : x - Step 2: Convert to fraction form
919,115.30/1,378,716.15 = 288,049.70/x - Step 3: Cross multiply
919,115.30x = 1,378,716.15 × 288,049.70 - Step 4: Simplify right side
919,115.30x = 397,138,773,392.66 - Step 5: Solve for x
x = 397,138,773,392.66/919,115.30 - Step 6: Final answer
x = 432,088.09
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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.