Finding the Fourth Proportional to 879,338.20, 1,318,769.99 and 310,644.42
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Solution
The fourth proportional to 879,338.20, 1,318,769.99 and 310,644.42 is: 465,882.80
Step by Step Solution
- Step 1: Write the proportion equation
879,338.20 : 1,318,769.99 = 310,644.42 : x - Step 2: Convert to fraction form
879,338.20/1,318,769.99 = 310,644.42/x - Step 3: Cross multiply
879,338.20x = 1,318,769.99 × 310,644.42 - Step 4: Simplify right side
879,338.20x = 409,668,537,103.73 - Step 5: Solve for x
x = 409,668,537,103.73/879,338.20 - Step 6: Final answer
x = 465,882.80
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1.5x scale
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.