Finding the Fourth Proportional to 394,736,678.94, 544,715,035.95 and 216,086,007.09
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Solution
The fourth proportional to 394,736,678.94, 544,715,035.95 and 216,086,007.09 is: 298,186,875.96
Step by Step Solution
- Step 1: Write the proportion equation
394,736,678.94 : 544,715,035.95 = 216,086,007.09 : x - Step 2: Convert to fraction form
394,736,678.94/544,715,035.95 = 216,086,007.09/x - Step 3: Cross multiply
394,736,678.94x = 544,715,035.95 × 216,086,007.09 - Step 4: Simplify right side
394,736,678.94x = 117,705,297,120,321,312 - Step 5: Solve for x
x = 117,705,297,120,321,312/394,736,678.94 - Step 6: Final answer
x = 298,186,875.96
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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.