Finding the Fourth Proportional to 1,378,721.87, 1,902,608.84 and 766,861.46
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Solution
The fourth proportional to 1,378,721.87, 1,902,608.84 and 766,861.46 is: 1,058,253.61
Step by Step Solution
- Step 1: Write the proportion equation
1,378,721.87 : 1,902,608.84 = 766,861.46 : x - Step 2: Convert to fraction form
1,378,721.87/1,902,608.84 = 766,861.46/x - Step 3: Cross multiply
1,378,721.87x = 1,902,608.84 × 766,861.46 - Step 4: Simplify right side
1,378,721.87x = 1,459,037,392,851.31 - Step 5: Solve for x
x = 1,459,037,392,851.31/1,378,721.87 - Step 6: Final answer
x = 1,058,253.61
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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.