Finding the Fourth Proportional to 918,989.35, 1,268,183.28 and 499,874.49
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Solution
The fourth proportional to 918,989.35, 1,268,183.28 and 499,874.49 is: 689,814.82
Step by Step Solution
- Step 1: Write the proportion equation
918,989.35 : 1,268,183.28 = 499,874.49 : x - Step 2: Convert to fraction form
918,989.35/1,268,183.28 = 499,874.49/x - Step 3: Cross multiply
918,989.35x = 1,268,183.28 × 499,874.49 - Step 4: Simplify right side
918,989.35x = 633,932,472,191.06 - Step 5: Solve for x
x = 633,932,472,191.06/918,989.35 - Step 6: Final answer
x = 689,814.82
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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.