Finding the Fourth Proportional to 515,619.15, 711,543.69 and 286,163.07
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Solution
The fourth proportional to 515,619.15, 711,543.69 and 286,163.07 is: 394,899.08
Step by Step Solution
- Step 1: Write the proportion equation
515,619.15 : 711,543.69 = 286,163.07 : x - Step 2: Convert to fraction form
515,619.15/711,543.69 = 286,163.07/x - Step 3: Cross multiply
515,619.15x = 711,543.69 × 286,163.07 - Step 4: Simplify right side
515,619.15x = 203,617,526,769.53 - Step 5: Solve for x
x = 203,617,526,769.53/515,619.15 - Step 6: Final answer
x = 394,899.08
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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.