Finding the Fourth Proportional to 981,427.26, 1,472,139.09 and 307,560.18
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Solution
The fourth proportional to 981,427.26, 1,472,139.09 and 307,560.18 is: 461,339.71
Step by Step Solution
- Step 1: Write the proportion equation
981,427.26 : 1,472,139.09 = 307,560.18 : x - Step 2: Convert to fraction form
981,427.26/1,472,139.09 = 307,560.18/x - Step 3: Cross multiply
981,427.26x = 1,472,139.09 × 307,560.18 - Step 4: Simplify right side
981,427.26x = 452,771,363,505.44 - Step 5: Solve for x
x = 452,771,363,505.44/981,427.26 - Step 6: Final answer
x = 461,339.71
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1.5x scale
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.