Finding the Fourth Proportional to 3,128,403.62, 4,694,380.44 and 1,689,067.76
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Solution
The fourth proportional to 3,128,403.62, 4,694,380.44 and 1,689,067.76 is: 2,534,559.99
Step by Step Solution
- Step 1: Write the proportion equation
3,128,403.62 : 4,694,380.44 = 1,689,067.76 : x - Step 2: Convert to fraction form
3,128,403.62/4,694,380.44 = 1,689,067.76/x - Step 3: Cross multiply
3,128,403.62x = 4,694,380.44 × 1,689,067.76 - Step 4: Simplify right side
3,128,403.62x = 7,929,126,654,378.62 - Step 5: Solve for x
x = 7,929,126,654,378.62/3,128,403.62 - Step 6: Final answer
x = 2,534,559.99
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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.