Finding the Fourth Proportional to 487,421.99, 730,634.49 and 187,785.17
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Solution
The fourth proportional to 487,421.99, 730,634.49 and 187,785.17 is: 281,485.70
Step by Step Solution
- Step 1: Write the proportion equation
487,421.99 : 730,634.49 = 187,785.17 : x - Step 2: Convert to fraction form
487,421.99/730,634.49 = 187,785.17/x - Step 3: Cross multiply
487,421.99x = 730,634.49 × 187,785.17 - Step 4: Simplify right side
487,421.99x = 137,202,321,912.51 - Step 5: Solve for x
x = 137,202,321,912.51/487,421.99 - Step 6: Final answer
x = 281,485.70
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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.