Finding the Fourth Proportional to 415,845,638.49, 573,686,842.28 and 250,741,485.21
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Solution
The fourth proportional to 415,845,638.49, 573,686,842.28 and 250,741,485.21 is: 345,914,631.69
Step by Step Solution
- Step 1: Write the proportion equation
415,845,638.49 : 573,686,842.28 = 250,741,485.21 : x - Step 2: Convert to fraction form
415,845,638.49/573,686,842.28 = 250,741,485.21/x - Step 3: Cross multiply
415,845,638.49x = 573,686,842.28 × 250,741,485.21 - Step 4: Simplify right side
415,845,638.49x = 143,847,090,878,722,224 - Step 5: Solve for x
x = 143,847,090,878,722,224/415,845,638.49 - Step 6: Final answer
x = 345,914,631.69
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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.