Finding the Fourth Proportional to 2,990,210.58, 4,131,888.39 and 2,129,276.16
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Solution
The fourth proportional to 2,990,210.58, 4,131,888.39 and 2,129,276.16 is: 2,942,244.77
Step by Step Solution
- Step 1: Write the proportion equation
2,990,210.58 : 4,131,888.39 = 2,129,276.16 : x - Step 2: Convert to fraction form
2,990,210.58/4,131,888.39 = 2,129,276.16/x - Step 3: Cross multiply
2,990,210.58x = 4,131,888.39 × 2,129,276.16 - Step 4: Simplify right side
2,990,210.58x = 8,797,931,444,607.78 - Step 5: Solve for x
x = 8,797,931,444,607.78/2,990,210.58 - Step 6: Final answer
x = 2,942,244.77
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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.