Finding the Fourth Proportional to 487,124.80, 730,687.20 and 310,415.20
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Solution
The fourth proportional to 487,124.80, 730,687.20 and 310,415.20 is: 465,622.80
Step by Step Solution
- Step 1: Write the proportion equation
487,124.80 : 730,687.20 = 310,415.20 : x - Step 2: Convert to fraction form
487,124.80/730,687.20 = 310,415.20/x - Step 3: Cross multiply
487,124.80x = 730,687.20 × 310,415.20 - Step 4: Simplify right side
487,124.80x = 226,816,413,325.44 - Step 5: Solve for x
x = 226,816,413,325.44/487,124.80 - Step 6: Final answer
x = 465,622.80
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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.