Finding the Fourth Proportional to 1,421,236.53, 1,961,274.06 and 776,660.60
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Solution
The fourth proportional to 1,421,236.53, 1,961,274.06 and 776,660.60 is: 1,071,773.95
Step by Step Solution
- Step 1: Write the proportion equation
1,421,236.53 : 1,961,274.06 = 776,660.60 : x - Step 2: Convert to fraction form
1,421,236.53/1,961,274.06 = 776,660.60/x - Step 3: Cross multiply
1,421,236.53x = 1,961,274.06 × 776,660.60 - Step 4: Simplify right side
1,421,236.53x = 1,523,244,293,107.22 - Step 5: Solve for x
x = 1,523,244,293,107.22/1,421,236.53 - Step 6: Final answer
x = 1,071,773.95
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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.