Finding the Fourth Proportional to 542,245.70, 748,128.06 and 312,772.23
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Solution
The fourth proportional to 542,245.70, 748,128.06 and 312,772.23 is: 431,527.04
Step by Step Solution
- Step 1: Write the proportion equation
542,245.70 : 748,128.06 = 312,772.23 : x - Step 2: Convert to fraction form
542,245.70/748,128.06 = 312,772.23/x - Step 3: Cross multiply
542,245.70x = 748,128.06 × 312,772.23 - Step 4: Simplify right side
542,245.70x = 233,993,677,911.13 - Step 5: Solve for x
x = 233,993,677,911.13/542,245.70 - Step 6: Final answer
x = 431,527.04
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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.