Finding the Fourth Proportional to 790,816.73, 1,185,979.77 and 285,311.99
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Solution
The fourth proportional to 790,816.73, 1,185,979.77 and 285,311.99 is: 427,879.47
Step by Step Solution
- Step 1: Write the proportion equation
790,816.73 : 1,185,979.77 = 285,311.99 : x - Step 2: Convert to fraction form
790,816.73/1,185,979.77 = 285,311.99/x - Step 3: Cross multiply
790,816.73x = 1,185,979.77 × 285,311.99 - Step 4: Simplify right side
790,816.73x = 338,374,242,348.54 - Step 5: Solve for x
x = 338,374,242,348.54/790,816.73 - Step 6: Final answer
x = 427,879.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.