Finding the Fourth Proportional to 515,424.09, 711,324.21 and 286,024.80
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Solution
The fourth proportional to 515,424.09, 711,324.21 and 286,024.80 is: 394,735.85
Step by Step Solution
- Step 1: Write the proportion equation
515,424.09 : 711,324.21 = 286,024.80 : x - Step 2: Convert to fraction form
515,424.09/711,324.21 = 286,024.80/x - Step 3: Cross multiply
515,424.09x = 711,324.21 × 286,024.80 - Step 4: Simplify right side
515,424.09x = 203,456,364,900.41 - Step 5: Solve for x
x = 203,456,364,900.41/515,424.09 - Step 6: Final answer
x = 394,735.85
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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.