Finding the Fourth Proportional to 819,989.68, 1,131,613.86 and 475,799.68
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Solution
The fourth proportional to 819,989.68, 1,131,613.86 and 475,799.68 is: 656,619.86
Step by Step Solution
- Step 1: Write the proportion equation
819,989.68 : 1,131,613.86 = 475,799.68 : x - Step 2: Convert to fraction form
819,989.68/1,131,613.86 = 475,799.68/x - Step 3: Cross multiply
819,989.68x = 1,131,613.86 × 475,799.68 - Step 4: Simplify right side
819,989.68x = 538,421,512,471.57 - Step 5: Solve for x
x = 538,421,512,471.57/819,989.68 - Step 6: Final answer
x = 656,619.86
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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.