Finding the Fourth Proportional to 2,990,857.80, 4,479,968.70 and 1,980,463.80
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Solution
The fourth proportional to 2,990,857.80, 4,479,968.70 and 1,980,463.80 is: 2,966,512.09
Step by Step Solution
- Step 1: Write the proportion equation
2,990,857.80 : 4,479,968.70 = 1,980,463.80 : x - Step 2: Convert to fraction form
2,990,857.80/4,479,968.70 = 1,980,463.80/x - Step 3: Cross multiply
2,990,857.80x = 4,479,968.70 × 1,980,463.80 - Step 4: Simplify right side
2,990,857.80x = 8,872,415,835,483.06 - Step 5: Solve for x
x = 8,872,415,835,483.06/2,990,857.80 - Step 6: Final answer
x = 2,966,512.09
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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.