Finding the Fourth Proportional to 728,497.95, 1,092,123.63 and 279,540.99
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Solution
The fourth proportional to 728,497.95, 1,092,123.63 and 279,540.99 is: 419,072.31
Step by Step Solution
- Step 1: Write the proportion equation
728,497.95 : 1,092,123.63 = 279,540.99 : x - Step 2: Convert to fraction form
728,497.95/1,092,123.63 = 279,540.99/x - Step 3: Cross multiply
728,497.95x = 1,092,123.63 × 279,540.99 - Step 4: Simplify right side
728,497.95x = 305,293,320,732.59 - Step 5: Solve for x
x = 305,293,320,732.59/728,497.95 - Step 6: Final answer
x = 419,072.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.