Finding the Fourth Proportional to 1,388,888.26, 2,079,181.62 and 840,119.93
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Solution
The fourth proportional to 1,388,888.26, 2,079,181.62 and 840,119.93 is: 1,257,669.16
Step by Step Solution
- Step 1: Write the proportion equation
1,388,888.26 : 2,079,181.62 = 840,119.93 : x - Step 2: Convert to fraction form
1,388,888.26/2,079,181.62 = 840,119.93/x - Step 3: Cross multiply
1,388,888.26x = 2,079,181.62 × 840,119.93 - Step 4: Simplify right side
1,388,888.26x = 1,746,761,919,151.99 - Step 5: Solve for x
x = 1,746,761,919,151.99/1,388,888.26 - Step 6: Final answer
x = 1,257,669.16
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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.