Finding the Fourth Proportional to 565,344.12, 780,189.66 and 310,701.99
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Solution
The fourth proportional to 565,344.12, 780,189.66 and 310,701.99 is: 428,776.87
Step by Step Solution
- Step 1: Write the proportion equation
565,344.12 : 780,189.66 = 310,701.99 : x - Step 2: Convert to fraction form
565,344.12/780,189.66 = 310,701.99/x - Step 3: Cross multiply
565,344.12x = 780,189.66 × 310,701.99 - Step 4: Simplify right side
565,344.12x = 242,406,479,939.42 - Step 5: Solve for x
x = 242,406,479,939.42/565,344.12 - Step 6: Final answer
x = 428,776.87
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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.