Finding the Fourth Proportional to 5,190,620.91, 7,163,261.70 and 2,985,480.18
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Solution
The fourth proportional to 5,190,620.91, 7,163,261.70 and 2,985,480.18 is: 4,120,080.47
Step by Step Solution
- Step 1: Write the proportion equation
5,190,620.91 : 7,163,261.70 = 2,985,480.18 : x - Step 2: Convert to fraction form
5,190,620.91/7,163,261.70 = 2,985,480.18/x - Step 3: Cross multiply
5,190,620.91x = 7,163,261.70 × 2,985,480.18 - Step 4: Simplify right side
5,190,620.91x = 21,385,775,829,503.11 - Step 5: Solve for x
x = 21,385,775,829,503.11/5,190,620.91 - Step 6: Final answer
x = 4,120,080.47
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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.