Finding the Fourth Proportional to 680,415.68, 937,785.84 and 498,742.40
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Solution
The fourth proportional to 680,415.68, 937,785.84 and 498,742.40 is: 687,393.86
Step by Step Solution
- Step 1: Write the proportion equation
680,415.68 : 937,785.84 = 498,742.40 : x - Step 2: Convert to fraction form
680,415.68/937,785.84 = 498,742.40/x - Step 3: Cross multiply
680,415.68x = 937,785.84 × 498,742.40 - Step 4: Simplify right side
680,415.68x = 467,713,560,527.62 - Step 5: Solve for x
x = 467,713,560,527.62/680,415.68 - Step 6: Final answer
x = 687,393.86
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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.