Finding the Fourth Proportional to 511,679.31, 706,128.74 and 282,243.57
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Solution
The fourth proportional to 511,679.31, 706,128.74 and 282,243.57 is: 389,502.35
Step by Step Solution
- Step 1: Write the proportion equation
511,679.31 : 706,128.74 = 282,243.57 : x - Step 2: Convert to fraction form
511,679.31/706,128.74 = 282,243.57/x - Step 3: Cross multiply
511,679.31x = 706,128.74 × 282,243.57 - Step 4: Simplify right side
511,679.31x = 199,300,295,045.98 - Step 5: Solve for x
x = 199,300,295,045.98/511,679.31 - Step 6: Final answer
x = 389,502.35
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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.