Finding the Fourth Proportional to 1,189,152.63, 1,641,035.04 and 645,288.53
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Solution
The fourth proportional to 1,189,152.63, 1,641,035.04 and 645,288.53 is: 890,500.56
Step by Step Solution
- Step 1: Write the proportion equation
1,189,152.63 : 1,641,035.04 = 645,288.53 : x - Step 2: Convert to fraction form
1,189,152.63/1,641,035.04 = 645,288.53/x - Step 3: Cross multiply
1,189,152.63x = 1,641,035.04 × 645,288.53 - Step 4: Simplify right side
1,189,152.63x = 1,058,941,088,640.09 - Step 5: Solve for x
x = 1,058,941,088,640.09/1,189,152.63 - Step 6: Final answer
x = 890,500.56
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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.