Finding the Fourth Proportional to 1,922,557.20, 2,880,725.40 and 1,211,312.40
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Solution
The fourth proportional to 1,922,557.20, 2,880,725.40 and 1,211,312.40 is: 1,815,008.88
Step by Step Solution
- Step 1: Write the proportion equation
1,922,557.20 : 2,880,725.40 = 1,211,312.40 : x - Step 2: Convert to fraction form
1,922,557.20/2,880,725.40 = 1,211,312.40/x - Step 3: Cross multiply
1,922,557.20x = 2,880,725.40 × 1,211,312.40 - Step 4: Simplify right side
1,922,557.20x = 3,489,458,398,014.96 - Step 5: Solve for x
x = 3,489,458,398,014.96/1,922,557.20 - Step 6: Final answer
x = 1,815,008.88
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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.