Finding the Fourth Proportional to 719,728,917.20, 1,079,593,375.80 and 447,631,125.20
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Solution
The fourth proportional to 719,728,917.20, 1,079,593,375.80 and 447,631,125.20 is: 671,446,687.80
Step by Step Solution
- Step 1: Write the proportion equation
719,728,917.20 : 1,079,593,375.80 = 447,631,125.20 : x - Step 2: Convert to fraction form
719,728,917.20/1,079,593,375.80 = 447,631,125.20/x - Step 3: Cross multiply
719,728,917.20x = 1,079,593,375.80 × 447,631,125.20 - Step 4: Simplify right side
719,728,917.20x = 483,259,597,567,820,416 - Step 5: Solve for x
x = 483,259,597,567,820,416/719,728,917.20 - Step 6: Final answer
x = 671,446,687.80
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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.