Finding the Fourth Proportional to 1,991,442.71, 2,748,161.42 and 1,120,211.62
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Solution
The fourth proportional to 1,991,442.71, 2,748,161.42 and 1,120,211.62 is: 1,545,875.43
Step by Step Solution
- Step 1: Write the proportion equation
1,991,442.71 : 2,748,161.42 = 1,120,211.62 : x - Step 2: Convert to fraction form
1,991,442.71/2,748,161.42 = 1,120,211.62/x - Step 3: Cross multiply
1,991,442.71x = 2,748,161.42 × 1,120,211.62 - Step 4: Simplify right side
1,991,442.71x = 3,078,522,363,507.44 - Step 5: Solve for x
x = 3,078,522,363,507.44/1,991,442.71 - Step 6: Final answer
x = 1,545,875.43
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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.