Finding the Fourth Proportional to 818,548.25, 1,129,446.63 and 455,963.09
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Solution
The fourth proportional to 818,548.25, 1,129,446.63 and 455,963.09 is: 629,145.53
Step by Step Solution
- Step 1: Write the proportion equation
818,548.25 : 1,129,446.63 = 455,963.09 : x - Step 2: Convert to fraction form
818,548.25/1,129,446.63 = 455,963.09/x - Step 3: Cross multiply
818,548.25x = 1,129,446.63 × 455,963.09 - Step 4: Simplify right side
818,548.25x = 514,985,969,757.65 - Step 5: Solve for x
x = 514,985,969,757.65/818,548.25 - Step 6: Final answer
x = 629,145.53
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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.