Finding the Fourth Proportional to 718,427.48, 990,908.84 and 488,576.21
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Solution
The fourth proportional to 718,427.48, 990,908.84 and 488,576.21 is: 673,880.80
Step by Step Solution
- Step 1: Write the proportion equation
718,427.48 : 990,908.84 = 488,576.21 : x - Step 2: Convert to fraction form
718,427.48/990,908.84 = 488,576.21/x - Step 3: Cross multiply
718,427.48x = 990,908.84 × 488,576.21 - Step 4: Simplify right side
718,427.48x = 484,134,481,769.59 - Step 5: Solve for x
x = 484,134,481,769.59/718,427.48 - Step 6: Final answer
x = 673,880.80
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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.