Finding the Fourth Proportional to 638,105.48, 879,374.26 and 456,502.09
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Solution
The fourth proportional to 638,105.48, 879,374.26 and 456,502.09 is: 629,106.32
Step by Step Solution
- Step 1: Write the proportion equation
638,105.48 : 879,374.26 = 456,502.09 : x - Step 2: Convert to fraction form
638,105.48/879,374.26 = 456,502.09/x - Step 3: Cross multiply
638,105.48x = 879,374.26 × 456,502.09 - Step 4: Simplify right side
638,105.48x = 401,436,187,582.20 - Step 5: Solve for x
x = 401,436,187,582.20/638,105.48 - Step 6: Final answer
x = 629,106.32
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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.