Finding the Fourth Proportional to 1,173,163.12, 1,618,965.12 and 636,619.12
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Solution
The fourth proportional to 1,173,163.12, 1,618,965.12 and 636,619.12 is: 878,534.39
Step by Step Solution
- Step 1: Write the proportion equation
1,173,163.12 : 1,618,965.12 = 636,619.12 : x - Step 2: Convert to fraction form
1,173,163.12/1,618,965.12 = 636,619.12/x - Step 3: Cross multiply
1,173,163.12x = 1,618,965.12 × 636,619.12 - Step 4: Simplify right side
1,173,163.12x = 1,030,664,150,005.09 - Step 5: Solve for x
x = 1,030,664,150,005.09/1,173,163.12 - Step 6: Final answer
x = 878,534.39
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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.