Finding the Fourth Proportional to 1,489,679.10, 2,235,685.05 and 691,059.60
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Solution
The fourth proportional to 1,489,679.10, 2,235,685.05 and 691,059.60 is: 1,037,130.49
Step by Step Solution
- Step 1: Write the proportion equation
1,489,679.10 : 2,235,685.05 = 691,059.60 : x - Step 2: Convert to fraction form
1,489,679.10/2,235,685.05 = 691,059.60/x - Step 3: Cross multiply
1,489,679.10x = 2,235,685.05 × 691,059.60 - Step 4: Simplify right side
1,489,679.10x = 1,544,991,616,378.98 - Step 5: Solve for x
x = 1,544,991,616,378.98/1,489,679.10 - Step 6: Final answer
x = 1,037,130.49
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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.