Finding the Fourth Proportional to 640,310.20, 960,430.68 and 324,758.92
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Solution
The fourth proportional to 640,310.20, 960,430.68 and 324,758.92 is: 487,120.82
Step by Step Solution
- Step 1: Write the proportion equation
640,310.20 : 960,430.68 = 324,758.92 : x - Step 2: Convert to fraction form
640,310.20/960,430.68 = 324,758.92/x - Step 3: Cross multiply
640,310.20x = 960,430.68 × 324,758.92 - Step 4: Simplify right side
640,310.20x = 311,908,430,371.67 - Step 5: Solve for x
x = 311,908,430,371.67/640,310.20 - Step 6: Final answer
x = 487,120.82
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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.