Finding the Fourth Proportional to 1,189,153.63, 1,641,036.42 and 645,289.53
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Solution
The fourth proportional to 1,189,153.63, 1,641,036.42 and 645,289.53 is: 890,501.94
Step by Step Solution
- Step 1: Write the proportion equation
1,189,153.63 : 1,641,036.42 = 645,289.53 : x - Step 2: Convert to fraction form
1,189,153.63/1,641,036.42 = 645,289.53/x - Step 3: Cross multiply
1,189,153.63x = 1,641,036.42 × 645,289.53 - Step 4: Simplify right side
1,189,153.63x = 1,058,943,620,174.68 - Step 5: Solve for x
x = 1,058,943,620,174.68/1,189,153.63 - Step 6: Final answer
x = 890,501.94
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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.