Finding the Fourth Proportional to 718,320.36, 991,236.42 and 396,012.84
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Solution
The fourth proportional to 718,320.36, 991,236.42 and 396,012.84 is: 546,472.54
Step by Step Solution
- Step 1: Write the proportion equation
718,320.36 : 991,236.42 = 396,012.84 : x - Step 2: Convert to fraction form
718,320.36/991,236.42 = 396,012.84/x - Step 3: Cross multiply
718,320.36x = 991,236.42 × 396,012.84 - Step 4: Simplify right side
718,320.36x = 392,542,349,795.63 - Step 5: Solve for x
x = 392,542,349,795.63/718,320.36 - Step 6: Final answer
x = 546,472.54
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1.5x scale
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.