Finding the Fourth Proportional to 2,113,348.62, 2,916,419.60 and 1,146,479.09
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Solution
The fourth proportional to 2,113,348.62, 2,916,419.60 and 1,146,479.09 is: 1,582,140.32
Step by Step Solution
- Step 1: Write the proportion equation
2,113,348.62 : 2,916,419.60 = 1,146,479.09 : x - Step 2: Convert to fraction form
2,113,348.62/2,916,419.60 = 1,146,479.09/x - Step 3: Cross multiply
2,113,348.62x = 2,916,419.60 × 1,146,479.09 - Step 4: Simplify right side
2,113,348.62x = 3,343,614,068,751.67 - Step 5: Solve for x
x = 3,343,614,068,751.67/2,113,348.62 - Step 6: Final answer
x = 1,582,140.32
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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.