Finding the Fourth Proportional to 3,420,735.80, 4,721,116.20 and 1,970,148.92
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Solution
The fourth proportional to 3,420,735.80, 4,721,116.20 and 1,970,148.92 is: 2,719,093.94
Step by Step Solution
- Step 1: Write the proportion equation
3,420,735.80 : 4,721,116.20 = 1,970,148.92 : x - Step 2: Convert to fraction form
3,420,735.80/4,721,116.20 = 1,970,148.92/x - Step 3: Cross multiply
3,420,735.80x = 4,721,116.20 × 1,970,148.92 - Step 4: Simplify right side
3,420,735.80x = 9,301,301,982,624.50 - Step 5: Solve for x
x = 9,301,301,982,624.50/3,420,735.80 - Step 6: Final answer
x = 2,719,093.94
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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.