Finding the Fourth Proportional to 1,189,352.20, 1,641,318.30 and 645,492.68
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Solution
The fourth proportional to 1,189,352.20, 1,641,318.30 and 645,492.68 is: 890,786.55
Step by Step Solution
- Step 1: Write the proportion equation
1,189,352.20 : 1,641,318.30 = 645,492.68 : x - Step 2: Convert to fraction form
1,189,352.20/1,641,318.30 = 645,492.68/x - Step 3: Cross multiply
1,189,352.20x = 1,641,318.30 × 645,492.68 - Step 4: Simplify right side
1,189,352.20x = 1,059,458,948,200.04 - Step 5: Solve for x
x = 1,059,458,948,200.04/1,189,352.20 - Step 6: Final answer
x = 890,786.55
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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.