Finding the Fourth Proportional to 13,198,449,321.66, 18,214,205,262.53 and 7,177,306,879.08
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Solution
The fourth proportional to 13,198,449,321.66, 18,214,205,262.53 and 7,177,306,879.08 is: 9,904,871,211.89
Step by Step Solution
- Step 1: Write the proportion equation
13,198,449,321.66 : 18,214,205,262.53 = 7,177,306,879.08 : x - Step 2: Convert to fraction form
13,198,449,321.66/18,214,205,262.53 = 7,177,306,879.08/x - Step 3: Cross multiply
13,198,449,321.66x = 18,214,205,262.53 × 7,177,306,879.08 - Step 4: Simplify right side
13,198,449,321.66x = 130,728,940,727,731,699,712 - Step 5: Solve for x
x = 130,728,940,727,731,699,712/13,198,449,321.66 - Step 6: Final answer
x = 9,904,871,211.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.