Finding the Fourth Proportional to 514,713.86, 710,134.88 and 310,687.26
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Solution
The fourth proportional to 514,713.86, 710,134.88 and 310,687.26 is: 428,645.66
Step by Step Solution
- Step 1: Write the proportion equation
514,713.86 : 710,134.88 = 310,687.26 : x - Step 2: Convert to fraction form
514,713.86/710,134.88 = 310,687.26/x - Step 3: Cross multiply
514,713.86x = 710,134.88 × 310,687.26 - Step 4: Simplify right side
514,713.86x = 220,629,858,544.19 - Step 5: Solve for x
x = 220,629,858,544.19/514,713.86 - Step 6: Final answer
x = 428,645.66
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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.