Finding the Fourth Proportional to 402,409,811.20, 603,614,716.80 and 198,336,467.20
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Solution
The fourth proportional to 402,409,811.20, 603,614,716.80 and 198,336,467.20 is: 297,504,700.80
Step by Step Solution
- Step 1: Write the proportion equation
402,409,811.20 : 603,614,716.80 = 198,336,467.20 : x - Step 2: Convert to fraction form
402,409,811.20/603,614,716.80 = 198,336,467.20/x - Step 3: Cross multiply
402,409,811.20x = 603,614,716.80 × 198,336,467.20 - Step 4: Simplify right side
402,409,811.20x = 119,718,810,480,040,480 - Step 5: Solve for x
x = 119,718,810,480,040,480/402,409,811.20 - Step 6: Final answer
x = 297,504,700.80
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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.