Finding the Fourth Proportional to 1,205,871.21, 1,664,039.52 and 715,860.99
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Solution
The fourth proportional to 1,205,871.21, 1,664,039.52 and 715,860.99 is: 987,850.92
Step by Step Solution
- Step 1: Write the proportion equation
1,205,871.21 : 1,664,039.52 = 715,860.99 : x - Step 2: Convert to fraction form
1,205,871.21/1,664,039.52 = 715,860.99/x - Step 3: Cross multiply
1,205,871.21x = 1,664,039.52 × 715,860.99 - Step 4: Simplify right side
1,205,871.21x = 1,191,220,978,186.32 - Step 5: Solve for x
x = 1,191,220,978,186.32/1,205,871.21 - Step 6: Final answer
x = 987,850.92
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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.