Finding the Fourth Proportional to 565,519.38, 780,396.96 and 310,868.74
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Solution
The fourth proportional to 565,519.38, 780,396.96 and 310,868.74 is: 428,987.99
Step by Step Solution
- Step 1: Write the proportion equation
565,519.38 : 780,396.96 = 310,868.74 : x - Step 2: Convert to fraction form
565,519.38/780,396.96 = 310,868.74/x - Step 3: Cross multiply
565,519.38x = 780,396.96 × 310,868.74 - Step 4: Simplify right side
565,519.38x = 242,601,019,655.03 - Step 5: Solve for x
x = 242,601,019,655.03/565,519.38 - Step 6: Final answer
x = 428,987.99
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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.