Finding the Fourth Proportional to 1,189,144.99, 1,641,011.76 and 645,266.94
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Solution
The fourth proportional to 1,189,144.99, 1,641,011.76 and 645,266.94 is: 890,463.86
Step by Step Solution
- Step 1: Write the proportion equation
1,189,144.99 : 1,641,011.76 = 645,266.94 : x - Step 2: Convert to fraction form
1,189,144.99/1,641,011.76 = 645,266.94/x - Step 3: Cross multiply
1,189,144.99x = 1,641,011.76 × 645,266.94 - Step 4: Simplify right side
1,189,144.99x = 1,058,890,636,879.21 - Step 5: Solve for x
x = 1,058,890,636,879.21/1,189,144.99 - Step 6: Final answer
x = 890,463.86
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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.