Finding the Fourth Proportional to 394,803,400.78, 544,845,715.68 and 218,591,390.62
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Solution
The fourth proportional to 394,803,400.78, 544,845,715.68 and 218,591,390.62 is: 301,665,543.99
Step by Step Solution
- Step 1: Write the proportion equation
394,803,400.78 : 544,845,715.68 = 218,591,390.62 : x - Step 2: Convert to fraction form
394,803,400.78/544,845,715.68 = 218,591,390.62/x - Step 3: Cross multiply
394,803,400.78x = 544,845,715.68 × 218,591,390.62 - Step 4: Simplify right side
394,803,400.78x = 119,098,582,663,840,336 - Step 5: Solve for x
x = 119,098,582,663,840,336/394,803,400.78 - Step 6: Final answer
x = 301,665,543.99
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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.