Finding the Fourth Proportional to 747,439.70, 1,121,509.47 and 326,660.90
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Solution
The fourth proportional to 747,439.70, 1,121,509.47 and 326,660.90 is: 490,144.28
Step by Step Solution
- Step 1: Write the proportion equation
747,439.70 : 1,121,509.47 = 326,660.90 : x - Step 2: Convert to fraction form
747,439.70/1,121,509.47 = 326,660.90/x - Step 3: Cross multiply
747,439.70x = 1,121,509.47 × 326,660.90 - Step 4: Simplify right side
747,439.70x = 366,353,292,828.72 - Step 5: Solve for x
x = 366,353,292,828.72/747,439.70 - Step 6: Final answer
x = 490,144.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.