Finding the Fourth Proportional to 515,636.25, 711,578.28 and 286,193.63
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Solution
The fourth proportional to 515,636.25, 711,578.28 and 286,193.63 is: 394,947.34
Step by Step Solution
- Step 1: Write the proportion equation
515,636.25 : 711,578.28 = 286,193.63 : x - Step 2: Convert to fraction form
515,636.25/711,578.28 = 286,193.63/x - Step 3: Cross multiply
515,636.25x = 711,578.28 × 286,193.63 - Step 4: Simplify right side
515,636.25x = 203,649,167,424.47 - Step 5: Solve for x
x = 203,649,167,424.47/515,636.25 - Step 6: Final answer
x = 394,947.34
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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.