Finding the Fourth Proportional to 857,257.59, 1,284,986.18 and 288,441.21
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Solution
The fourth proportional to 857,257.59, 1,284,986.18 and 288,441.21 is: 432,358.92
Step by Step Solution
- Step 1: Write the proportion equation
857,257.59 : 1,284,986.18 = 288,441.21 : x - Step 2: Convert to fraction form
857,257.59/1,284,986.18 = 288,441.21/x - Step 3: Cross multiply
857,257.59x = 1,284,986.18 × 288,441.21 - Step 4: Simplify right side
857,257.59x = 370,642,967,150.27 - Step 5: Solve for x
x = 370,642,967,150.27/857,257.59 - Step 6: Final answer
x = 432,358.92
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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.