Finding the Fourth Proportional to 1,992,313.80, 2,988,081.90 and 644,149.80
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Solution
The fourth proportional to 1,992,313.80, 2,988,081.90 and 644,149.80 is: 966,098.99
Step by Step Solution
- Step 1: Write the proportion equation
1,992,313.80 : 2,988,081.90 = 644,149.80 : x - Step 2: Convert to fraction form
1,992,313.80/2,988,081.90 = 644,149.80/x - Step 3: Cross multiply
1,992,313.80x = 2,988,081.90 × 644,149.80 - Step 4: Simplify right side
1,992,313.80x = 1,924,772,358,268.62 - Step 5: Solve for x
x = 1,924,772,358,268.62/1,992,313.80 - Step 6: Final answer
x = 966,098.99
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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.