Finding the Fourth Proportional to 1,254,183.20, 1,880,497.20 and 721,440.80
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Solution
The fourth proportional to 1,254,183.20, 1,880,497.20 and 721,440.80 is: 1,081,713.90
Step by Step Solution
- Step 1: Write the proportion equation
1,254,183.20 : 1,880,497.20 = 721,440.80 : x - Step 2: Convert to fraction form
1,254,183.20/1,880,497.20 = 721,440.80/x - Step 3: Cross multiply
1,254,183.20x = 1,880,497.20 × 721,440.80 - Step 4: Simplify right side
1,254,183.20x = 1,356,667,404,365.76 - Step 5: Solve for x
x = 1,356,667,404,365.76/1,254,183.20 - Step 6: Final answer
x = 1,081,713.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.