Finding the Fourth Proportional to 1,122,160.81, 1,548,591.82 and 638,757.09
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Solution
The fourth proportional to 1,122,160.81, 1,548,591.82 and 638,757.09 is: 881,490.42
Step by Step Solution
- Step 1: Write the proportion equation
1,122,160.81 : 1,548,591.82 = 638,757.09 : x - Step 2: Convert to fraction form
1,122,160.81/1,548,591.82 = 638,757.09/x - Step 3: Cross multiply
1,122,160.81x = 1,548,591.82 × 638,757.09 - Step 4: Simplify right side
1,122,160.81x = 989,174,004,541.00 - Step 5: Solve for x
x = 989,174,004,541.00/1,122,160.81 - Step 6: Final answer
x = 881,490.42
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1.5x scale
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.