Finding the Fourth Proportional to 3,128,611.80, 4,692,917.70 and 998,911.20
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Solution
The fourth proportional to 3,128,611.80, 4,692,917.70 and 998,911.20 is: 1,498,366.80
Step by Step Solution
- Step 1: Write the proportion equation
3,128,611.80 : 4,692,917.70 = 998,911.20 : x - Step 2: Convert to fraction form
3,128,611.80/4,692,917.70 = 998,911.20/x - Step 3: Cross multiply
3,128,611.80x = 4,692,917.70 × 998,911.20 - Step 4: Simplify right side
3,128,611.80x = 4,687,808,051,208.24 - Step 5: Solve for x
x = 4,687,808,051,208.24/3,128,611.80 - Step 6: Final answer
x = 1,498,366.80
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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.