Finding the Fourth Proportional to 12,315,713.88, 18,471,809.88 and 4,228,537.80
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Solution
The fourth proportional to 12,315,713.88, 18,471,809.88 and 4,228,537.80 is: 6,342,202.09
Step by Step Solution
- Step 1: Write the proportion equation
12,315,713.88 : 18,471,809.88 = 4,228,537.80 : x - Step 2: Convert to fraction form
12,315,713.88/18,471,809.88 = 4,228,537.80/x - Step 3: Cross multiply
12,315,713.88x = 18,471,809.88 × 4,228,537.80 - Step 4: Simplify right side
12,315,713.88x = 78,108,746,311,993.45 - Step 5: Solve for x
x = 78,108,746,311,993.45/12,315,713.88 - Step 6: Final answer
x = 6,342,202.09
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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.