Finding the Fourth Proportional to 1,189,403.54, 1,641,392.61 and 645,545.84
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Solution
The fourth proportional to 1,189,403.54, 1,641,392.61 and 645,545.84 is: 890,861.79
Step by Step Solution
- Step 1: Write the proportion equation
1,189,403.54 : 1,641,392.61 = 645,545.84 : x - Step 2: Convert to fraction form
1,189,403.54/1,641,392.61 = 645,545.84/x - Step 3: Cross multiply
1,189,403.54x = 1,641,392.61 × 645,545.84 - Step 4: Simplify right side
1,189,403.54x = 1,059,594,171,192.24 - Step 5: Solve for x
x = 1,059,594,171,192.24/1,189,403.54 - Step 6: Final answer
x = 890,861.79
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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.