Finding the Fourth Proportional to 1,138,131.81, 1,570,653.59 and 628,866.99
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Solution
The fourth proportional to 1,138,131.81, 1,570,653.59 and 628,866.99 is: 867,853.95
Step by Step Solution
- Step 1: Write the proportion equation
1,138,131.81 : 1,570,653.59 = 628,866.99 : x - Step 2: Convert to fraction form
1,138,131.81/1,570,653.59 = 628,866.99/x - Step 3: Cross multiply
1,138,131.81x = 1,570,653.59 × 628,866.99 - Step 4: Simplify right side
1,138,131.81x = 987,732,192,331.66 - Step 5: Solve for x
x = 987,732,192,331.66/1,138,131.81 - Step 6: Final answer
x = 867,853.95
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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.