Finding the Fourth Proportional to 3,999,469.62, 5,519,228.80 and 2,163,887.62
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Solution
The fourth proportional to 3,999,469.62, 5,519,228.80 and 2,163,887.62 is: 2,986,143.67
Step by Step Solution
- Step 1: Write the proportion equation
3,999,469.62 : 5,519,228.80 = 2,163,887.62 : x - Step 2: Convert to fraction form
3,999,469.62/5,519,228.80 = 2,163,887.62/x - Step 3: Cross multiply
3,999,469.62x = 5,519,228.80 × 2,163,887.62 - Step 4: Simplify right side
3,999,469.62x = 11,942,990,872,267.46 - Step 5: Solve for x
x = 11,942,990,872,267.46/3,999,469.62 - Step 6: Final answer
x = 2,986,143.67
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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.