Finding the Fourth Proportional to 665,959.80, 998,939.70 and 329,161.80
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Solution
The fourth proportional to 665,959.80, 998,939.70 and 329,161.80 is: 493,742.70
Step by Step Solution
- Step 1: Write the proportion equation
665,959.80 : 998,939.70 = 329,161.80 : x - Step 2: Convert to fraction form
665,959.80/998,939.70 = 329,161.80/x - Step 3: Cross multiply
665,959.80x = 998,939.70 × 329,161.80 - Step 4: Simplify right side
665,959.80x = 328,812,789,743.46 - Step 5: Solve for x
x = 328,812,789,743.46/665,959.80 - Step 6: Final answer
x = 493,742.70
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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.