Finding the Fourth Proportional to 920,078.16, 1,268,395.92 and 715,770.24
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Solution
The fourth proportional to 920,078.16, 1,268,395.92 and 715,770.24 is: 986,742.31
Step by Step Solution
- Step 1: Write the proportion equation
920,078.16 : 1,268,395.92 = 715,770.24 : x - Step 2: Convert to fraction form
920,078.16/1,268,395.92 = 715,770.24/x - Step 3: Cross multiply
920,078.16x = 1,268,395.92 × 715,770.24 - Step 4: Simplify right side
920,078.16x = 907,880,052,073.42 - Step 5: Solve for x
x = 907,880,052,073.42/920,078.16 - Step 6: Final answer
x = 986,742.31
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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.