Finding the Fourth Proportional to 2,990,228.40, 4,485,342.60 and 2,759,281.20
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Solution
The fourth proportional to 2,990,228.40, 4,485,342.60 and 2,759,281.20 is: 4,138,921.80
Step by Step Solution
- Step 1: Write the proportion equation
2,990,228.40 : 4,485,342.60 = 2,759,281.20 : x - Step 2: Convert to fraction form
2,990,228.40/4,485,342.60 = 2,759,281.20/x - Step 3: Cross multiply
2,990,228.40x = 4,485,342.60 × 2,759,281.20 - Step 4: Simplify right side
2,990,228.40x = 12,376,321,511,739.12 - Step 5: Solve for x
x = 12,376,321,511,739.12/2,990,228.40 - Step 6: Final answer
x = 4,138,921.80
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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.