Finding the Fourth Proportional to 718,235.64, 991,167.84 and 391,546.80
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Solution
The fourth proportional to 718,235.64, 991,167.84 and 391,546.80 is: 540,336.03
Step by Step Solution
- Step 1: Write the proportion equation
718,235.64 : 991,167.84 = 391,546.80 : x - Step 2: Convert to fraction form
718,235.64/991,167.84 = 391,546.80/x - Step 3: Cross multiply
718,235.64x = 991,167.84 × 391,546.80 - Step 4: Simplify right side
718,235.64x = 388,088,596,014.91 - Step 5: Solve for x
x = 388,088,596,014.91/718,235.64 - Step 6: Final answer
x = 540,336.03
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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.