Finding the Fourth Proportional to 419,392,343.99, 629,088,497.76 and 398,421,080.75
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Solution
The fourth proportional to 419,392,343.99, 629,088,497.76 and 398,421,080.75 is: 597,631,603.81
Step by Step Solution
- Step 1: Write the proportion equation
419,392,343.99 : 629,088,497.76 = 398,421,080.75 : x - Step 2: Convert to fraction form
419,392,343.99/629,088,497.76 = 398,421,080.75/x - Step 3: Cross multiply
419,392,343.99x = 629,088,497.76 × 398,421,080.75 - Step 4: Simplify right side
419,392,343.99x = 250,642,119,164,933,152 - Step 5: Solve for x
x = 250,642,119,164,933,152/419,392,343.99 - Step 6: Final answer
x = 597,631,603.81
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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.