Finding the Fourth Proportional to 515,707.74, 711,665.43 and 286,251.54
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Solution
The fourth proportional to 515,707.74, 711,665.43 and 286,251.54 is: 395,020.88
Step by Step Solution
- Step 1: Write the proportion equation
515,707.74 : 711,665.43 = 286,251.54 : x - Step 2: Convert to fraction form
515,707.74/711,665.43 = 286,251.54/x - Step 3: Cross multiply
515,707.74x = 711,665.43 × 286,251.54 - Step 4: Simplify right side
515,707.74x = 203,715,325,302.26 - Step 5: Solve for x
x = 203,715,325,302.26/515,707.74 - Step 6: Final answer
x = 395,020.88
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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.