Finding the Fourth Proportional to 438,078.42, 653,250.73 and 422,467.09
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Solution
The fourth proportional to 438,078.42, 653,250.73 and 422,467.09 is: 629,971.53
Step by Step Solution
- Step 1: Write the proportion equation
438,078.42 : 653,250.73 = 422,467.09 : x - Step 2: Convert to fraction form
438,078.42/653,250.73 = 422,467.09/x - Step 3: Cross multiply
438,078.42x = 653,250.73 × 422,467.09 - Step 4: Simplify right side
438,078.42x = 275,976,932,254.18 - Step 5: Solve for x
x = 275,976,932,254.18/438,078.42 - Step 6: Final answer
x = 629,971.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.