Finding the Fourth Proportional to 403,985,517.26, 557,499,761.84 and 218,346,532.94
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Solution
The fourth proportional to 403,985,517.26, 557,499,761.84 and 218,346,532.94 is: 301,318,079.28
Step by Step Solution
- Step 1: Write the proportion equation
403,985,517.26 : 557,499,761.84 = 218,346,532.94 : x - Step 2: Convert to fraction form
403,985,517.26/557,499,761.84 = 218,346,532.94/x - Step 3: Cross multiply
403,985,517.26x = 557,499,761.84 × 218,346,532.94 - Step 4: Simplify right side
403,985,517.26x = 121,728,140,114,579,328 - Step 5: Solve for x
x = 121,728,140,114,579,328/403,985,517.26 - Step 6: Final answer
x = 301,318,079.28
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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.