Finding the Fourth Proportional to 1,189,480.01, 1,641,438.42 and 645,604.11
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Solution
The fourth proportional to 1,189,480.01, 1,641,438.42 and 645,604.11 is: 890,909.80
Step by Step Solution
- Step 1: Write the proportion equation
1,189,480.01 : 1,641,438.42 = 645,604.11 : x - Step 2: Convert to fraction form
1,189,480.01/1,641,438.42 = 645,604.11/x - Step 3: Cross multiply
1,189,480.01x = 1,641,438.42 × 645,604.11 - Step 4: Simplify right side
1,189,480.01x = 1,059,719,390,263.91 - Step 5: Solve for x
x = 1,059,719,390,263.91/1,189,480.01 - Step 6: Final answer
x = 890,909.80
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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.