Finding the Fourth Proportional to 813,067.61, 1,121,995.50 and 445,542.56
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Solution
The fourth proportional to 813,067.61, 1,121,995.50 and 445,542.56 is: 614,828.02
Step by Step Solution
- Step 1: Write the proportion equation
813,067.61 : 1,121,995.50 = 445,542.56 : x - Step 2: Convert to fraction form
813,067.61/1,121,995.50 = 445,542.56/x - Step 3: Cross multiply
813,067.61x = 1,121,995.50 × 445,542.56 - Step 4: Simplify right side
813,067.61x = 499,896,744,305.20 - Step 5: Solve for x
x = 499,896,744,305.20/813,067.61 - Step 6: Final answer
x = 614,828.02
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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.