Finding the Fourth Proportional to 520,322.81, 718,160.99 and 316,330.38
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Solution
The fourth proportional to 520,322.81, 718,160.99 and 316,330.38 is: 436,606.15
Step by Step Solution
- Step 1: Write the proportion equation
520,322.81 : 718,160.99 = 316,330.38 : x - Step 2: Convert to fraction form
520,322.81/718,160.99 = 316,330.38/x - Step 3: Cross multiply
520,322.81x = 718,160.99 × 316,330.38 - Step 4: Simplify right side
520,322.81x = 227,176,137,286.22 - Step 5: Solve for x
x = 227,176,137,286.22/520,322.81 - Step 6: Final answer
x = 436,606.15
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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.