Finding the Fourth Proportional to 12,320,623.20, 18,482,201.76 and 4,650,728.40
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Solution
The fourth proportional to 12,320,623.20, 18,482,201.76 and 4,650,728.40 is: 6,976,570.85
Step by Step Solution
- Step 1: Write the proportion equation
12,320,623.20 : 18,482,201.76 = 4,650,728.40 : x - Step 2: Convert to fraction form
12,320,623.20/18,482,201.76 = 4,650,728.40/x - Step 3: Cross multiply
12,320,623.20x = 18,482,201.76 × 4,650,728.40 - Step 4: Simplify right side
12,320,623.20x = 85,955,700,619,762 - Step 5: Solve for x
x = 85,955,700,619,762/12,320,623.20 - Step 6: Final answer
x = 6,976,570.85
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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.