Finding the Fourth Proportional to 394,724.24, 592,091.76 and 128,486.06
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Solution
The fourth proportional to 394,724.24, 592,091.76 and 128,486.06 is: 192,730.85
Step by Step Solution
- Step 1: Write the proportion equation
394,724.24 : 592,091.76 = 128,486.06 : x - Step 2: Convert to fraction form
394,724.24/592,091.76 = 128,486.06/x - Step 3: Cross multiply
394,724.24x = 592,091.76 × 128,486.06 - Step 4: Simplify right side
394,724.24x = 76,075,537,400.87 - Step 5: Solve for x
x = 76,075,537,400.87/394,724.24 - Step 6: Final answer
x = 192,730.85
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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.