Finding the Fourth Proportional to 543,887.80, 815,831.70 and 372,645.70
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Solution
The fourth proportional to 543,887.80, 815,831.70 and 372,645.70 is: 558,968.55
Step by Step Solution
- Step 1: Write the proportion equation
543,887.80 : 815,831.70 = 372,645.70 : x - Step 2: Convert to fraction form
543,887.80/815,831.70 = 372,645.70/x - Step 3: Cross multiply
543,887.80x = 815,831.70 × 372,645.70 - Step 4: Simplify right side
543,887.80x = 304,016,174,928.69 - Step 5: Solve for x
x = 304,016,174,928.69/543,887.80 - Step 6: Final answer
x = 558,968.55
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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.