Finding the Fourth Proportional to 2,138,611.12, 2,951,170.44 and 1,220,803.76
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Solution
The fourth proportional to 2,138,611.12, 2,951,170.44 and 1,220,803.76 is: 1,684,644.74
Step by Step Solution
- Step 1: Write the proportion equation
2,138,611.12 : 2,951,170.44 = 1,220,803.76 : x - Step 2: Convert to fraction form
2,138,611.12/2,951,170.44 = 1,220,803.76/x - Step 3: Cross multiply
2,138,611.12x = 2,951,170.44 × 1,220,803.76 - Step 4: Simplify right side
2,138,611.12x = 3,602,799,969,552.85 - Step 5: Solve for x
x = 3,602,799,969,552.85/2,138,611.12 - Step 6: Final answer
x = 1,684,644.74
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.