Finding the Fourth Proportional to 718,246.14, 991,186.38 and 395,967.81
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Solution
The fourth proportional to 718,246.14, 991,186.38 and 395,967.81 is: 546,439.28
Step by Step Solution
- Step 1: Write the proportion equation
718,246.14 : 991,186.38 = 395,967.81 : x - Step 2: Convert to fraction form
718,246.14/991,186.38 = 395,967.81/x - Step 3: Cross multiply
718,246.14x = 991,186.38 × 395,967.81 - Step 4: Simplify right side
718,246.14x = 392,477,900,190.43 - Step 5: Solve for x
x = 392,477,900,190.43/718,246.14 - Step 6: Final answer
x = 546,439.28
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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.