Finding the Fourth Proportional to 386,006.21, 578,476.79 and 278,533.82
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Solution
The fourth proportional to 386,006.21, 578,476.79 and 278,533.82 is: 417,416.48
Step by Step Solution
- Step 1: Write the proportion equation
386,006.21 : 578,476.79 = 278,533.82 : x - Step 2: Convert to fraction form
386,006.21/578,476.79 = 278,533.82/x - Step 3: Cross multiply
386,006.21x = 578,476.79 × 278,533.82 - Step 4: Simplify right side
386,006.21x = 161,125,351,198.06 - Step 5: Solve for x
x = 161,125,351,198.06/386,006.21 - Step 6: Final answer
x = 417,416.48
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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.