Finding the Fourth Proportional to 12,279,453.12, 18,423,015.84 and 4,192,620.48
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Solution
The fourth proportional to 12,279,453.12, 18,423,015.84 and 4,192,620.48 is: 6,290,240.51
Step by Step Solution
- Step 1: Write the proportion equation
12,279,453.12 : 18,423,015.84 = 4,192,620.48 : x - Step 2: Convert to fraction form
12,279,453.12/18,423,015.84 = 4,192,620.48/x - Step 3: Cross multiply
12,279,453.12x = 18,423,015.84 × 4,192,620.48 - Step 4: Simplify right side
12,279,453.12x = 77,240,713,514,148.41 - Step 5: Solve for x
x = 77,240,713,514,148.41/12,279,453.12 - Step 6: Final answer
x = 6,290,240.51
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1.5x scale
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.