Finding the Fourth Proportional to 3,908,579.43, 5,393,708.67 and 2,166,174.66
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Solution
The fourth proportional to 3,908,579.43, 5,393,708.67 and 2,166,174.66 is: 2,989,248.46
Step by Step Solution
- Step 1: Write the proportion equation
3,908,579.43 : 5,393,708.67 = 2,166,174.66 : x - Step 2: Convert to fraction form
3,908,579.43/5,393,708.67 = 2,166,174.66/x - Step 3: Cross multiply
3,908,579.43x = 5,393,708.67 × 2,166,174.66 - Step 4: Simplify right side
3,908,579.43x = 11,683,715,044,376.30 - Step 5: Solve for x
x = 11,683,715,044,376.30/3,908,579.43 - Step 6: Final answer
x = 2,989,248.46
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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.