Finding the Fourth Proportional to 1,991,444.71, 2,748,164.18 and 1,120,213.62
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Solution
The fourth proportional to 1,991,444.71, 2,748,164.18 and 1,120,213.62 is: 1,545,878.19
Step by Step Solution
- Step 1: Write the proportion equation
1,991,444.71 : 2,748,164.18 = 1,120,213.62 : x - Step 2: Convert to fraction form
1,991,444.71/2,748,164.18 = 1,120,213.62/x - Step 3: Cross multiply
1,991,444.71x = 2,748,164.18 × 1,120,213.62 - Step 4: Simplify right side
1,991,444.71x = 3,078,530,944,432.13 - Step 5: Solve for x
x = 3,078,530,944,432.13/1,991,444.71 - Step 6: Final answer
x = 1,545,878.19
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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.