Finding the Fourth Proportional to 497,639.84, 686,722.61 and 279,842.32
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Solution
The fourth proportional to 497,639.84, 686,722.61 and 279,842.32 is: 386,170.94
Step by Step Solution
- Step 1: Write the proportion equation
497,639.84 : 686,722.61 = 279,842.32 : x - Step 2: Convert to fraction form
497,639.84/686,722.61 = 279,842.32/x - Step 3: Cross multiply
497,639.84x = 686,722.61 × 279,842.32 - Step 4: Simplify right side
497,639.84x = 192,174,043,546.03 - Step 5: Solve for x
x = 192,174,043,546.03/497,639.84 - Step 6: Final answer
x = 386,170.94
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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.