Finding the Fourth Proportional to 2,157,187.58, 2,976,915.36 and 1,190,317.10
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Solution
The fourth proportional to 2,157,187.58, 2,976,915.36 and 1,190,317.10 is: 1,642,635.67
Step by Step Solution
- Step 1: Write the proportion equation
2,157,187.58 : 2,976,915.36 = 1,190,317.10 : x - Step 2: Convert to fraction form
2,157,187.58/2,976,915.36 = 1,190,317.10/x - Step 3: Cross multiply
2,157,187.58x = 2,976,915.36 × 1,190,317.10 - Step 4: Simplify right side
2,157,187.58x = 3,543,473,258,260.66 - Step 5: Solve for x
x = 3,543,473,258,260.66/2,157,187.58 - Step 6: Final answer
x = 1,642,635.67
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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.