Finding the Fourth Proportional to 4,313,759.20, 6,470,638.80 and 3,318,431.20
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Solution
The fourth proportional to 4,313,759.20, 6,470,638.80 and 3,318,431.20 is: 4,977,646.80
Step by Step Solution
- Step 1: Write the proportion equation
4,313,759.20 : 6,470,638.80 = 3,318,431.20 : x - Step 2: Convert to fraction form
4,313,759.20/6,470,638.80 = 3,318,431.20/x - Step 3: Cross multiply
4,313,759.20x = 6,470,638.80 × 3,318,431.20 - Step 4: Simplify right side
4,313,759.20x = 21,472,369,677,850.56 - Step 5: Solve for x
x = 21,472,369,677,850.56/4,313,759.20 - Step 6: Final answer
x = 4,977,646.80
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1.5x scale
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.