Finding the Fourth Proportional to 720,247.68, 993,939.75 and 397,955.48
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Solution
The fourth proportional to 720,247.68, 993,939.75 and 397,955.48 is: 549,177.43
Step by Step Solution
- Step 1: Write the proportion equation
720,247.68 : 993,939.75 = 397,955.48 : x - Step 2: Convert to fraction form
720,247.68/993,939.75 = 397,955.48/x - Step 3: Cross multiply
720,247.68x = 993,939.75 × 397,955.48 - Step 4: Simplify right side
720,247.68x = 395,543,765,332.63 - Step 5: Solve for x
x = 395,543,765,332.63/720,247.68 - Step 6: Final answer
x = 549,177.43
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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.