Finding the Fourth Proportional to 5,190,619.41, 7,163,259.63 and 2,985,478.68
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Solution
The fourth proportional to 5,190,619.41, 7,163,259.63 and 2,985,478.68 is: 4,120,078.40
Step by Step Solution
- Step 1: Write the proportion equation
5,190,619.41 : 7,163,259.63 = 2,985,478.68 : x - Step 2: Convert to fraction form
5,190,619.41/7,163,259.63 = 2,985,478.68/x - Step 3: Cross multiply
5,190,619.41x = 7,163,259.63 × 2,985,478.68 - Step 4: Simplify right side
5,190,619.41x = 21,385,758,904,669.69 - Step 5: Solve for x
x = 21,385,758,904,669.69/5,190,619.41 - Step 6: Final answer
x = 4,120,078.40
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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.