Finding the Fourth Proportional to 1,278,546.12, 1,917,320.58 and 479,392.20
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Solution
The fourth proportional to 1,278,546.12, 1,917,320.58 and 479,392.20 is: 718,901.35
Step by Step Solution
- Step 1: Write the proportion equation
1,278,546.12 : 1,917,320.58 = 479,392.20 : x - Step 2: Convert to fraction form
1,278,546.12/1,917,320.58 = 479,392.20/x - Step 3: Cross multiply
1,278,546.12x = 1,917,320.58 × 479,392.20 - Step 4: Simplify right side
1,278,546.12x = 919,148,530,951.48 - Step 5: Solve for x
x = 919,148,530,951.48/1,278,546.12 - Step 6: Final answer
x = 718,901.35
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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.