Finding the Fourth Proportional to 810,102.80, 1,215,154.20 and 389,277.20
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Solution
The fourth proportional to 810,102.80, 1,215,154.20 and 389,277.20 is: 583,915.80
Step by Step Solution
- Step 1: Write the proportion equation
810,102.80 : 1,215,154.20 = 389,277.20 : x - Step 2: Convert to fraction form
810,102.80/1,215,154.20 = 389,277.20/x - Step 3: Cross multiply
810,102.80x = 1,215,154.20 × 389,277.20 - Step 4: Simplify right side
810,102.80x = 473,031,824,544.24 - Step 5: Solve for x
x = 473,031,824,544.24/810,102.80 - Step 6: Final answer
x = 583,915.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.