Finding the Fourth Proportional to 5,220,487.76, 7,830,716.52 and 1,433,974.40
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Solution
The fourth proportional to 5,220,487.76, 7,830,716.52 and 1,433,974.40 is: 2,150,957.45
Step by Step Solution
- Step 1: Write the proportion equation
5,220,487.76 : 7,830,716.52 = 1,433,974.40 : x - Step 2: Convert to fraction form
5,220,487.76/7,830,716.52 = 1,433,974.40/x - Step 3: Cross multiply
5,220,487.76x = 7,830,716.52 × 1,433,974.40 - Step 4: Simplify right side
5,220,487.76x = 11,229,047,023,337.09 - Step 5: Solve for x
x = 11,229,047,023,337.09/5,220,487.76 - Step 6: Final answer
x = 2,150,957.45
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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.