Finding the Fourth Proportional to 515,707.24, 711,688.26 and 289,369.48
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Solution
The fourth proportional to 515,707.24, 711,688.26 and 289,369.48 is: 399,336.77
Step by Step Solution
- Step 1: Write the proportion equation
515,707.24 : 711,688.26 = 289,369.48 : x - Step 2: Convert to fraction form
515,707.24/711,688.26 = 289,369.48/x - Step 3: Cross multiply
515,707.24x = 711,688.26 × 289,369.48 - Step 4: Simplify right side
515,707.24x = 205,940,861,718.31 - Step 5: Solve for x
x = 205,940,861,718.31/515,707.24 - Step 6: Final answer
x = 399,336.77
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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.