Finding the Fourth Proportional to 818,868.18, 1,130,122.18 and 492,286.92
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Solution
The fourth proportional to 818,868.18, 1,130,122.18 and 492,286.92 is: 679,406.49
Step by Step Solution
- Step 1: Write the proportion equation
818,868.18 : 1,130,122.18 = 492,286.92 : x - Step 2: Convert to fraction form
818,868.18/1,130,122.18 = 492,286.92/x - Step 3: Cross multiply
818,868.18x = 1,130,122.18 × 492,286.92 - Step 4: Simplify right side
818,868.18x = 556,344,359,103.84 - Step 5: Solve for x
x = 556,344,359,103.84/818,868.18 - Step 6: Final answer
x = 679,406.49
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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.