Finding the Fourth Proportional to 667,235.70, 920,787.12 and 361,315.68
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Solution
The fourth proportional to 667,235.70, 920,787.12 and 361,315.68 is: 498,616.64
Step by Step Solution
- Step 1: Write the proportion equation
667,235.70 : 920,787.12 = 361,315.68 : x - Step 2: Convert to fraction form
667,235.70/920,787.12 = 361,315.68/x - Step 3: Cross multiply
667,235.70x = 920,787.12 × 361,315.68 - Step 4: Simplify right side
667,235.70x = 332,694,824,398.04 - Step 5: Solve for x
x = 332,694,824,398.04/667,235.70 - Step 6: Final answer
x = 498,616.64
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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.