Finding the Fourth Proportional to 633,998.75, 874,918.48 and 347,520.79
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Solution
The fourth proportional to 633,998.75, 874,918.48 and 347,520.79 is: 479,578.80
Step by Step Solution
- Step 1: Write the proportion equation
633,998.75 : 874,918.48 = 347,520.79 : x - Step 2: Convert to fraction form
633,998.75/874,918.48 = 347,520.79/x - Step 3: Cross multiply
633,998.75x = 874,918.48 × 347,520.79 - Step 4: Simplify right side
633,998.75x = 304,052,356,980.61 - Step 5: Solve for x
x = 304,052,356,980.61/633,998.75 - Step 6: Final answer
x = 479,578.80
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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.