Finding the Fourth Proportional to 572,432.40, 858,745.80 and 306,120.60
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Solution
The fourth proportional to 572,432.40, 858,745.80 and 306,120.60 is: 459,232.88
Step by Step Solution
- Step 1: Write the proportion equation
572,432.40 : 858,745.80 = 306,120.60 : x - Step 2: Convert to fraction form
572,432.40/858,745.80 = 306,120.60/x - Step 3: Cross multiply
572,432.40x = 858,745.80 × 306,120.60 - Step 4: Simplify right side
572,432.40x = 262,879,779,543.48 - Step 5: Solve for x
x = 262,879,779,543.48/572,432.40 - Step 6: Final answer
x = 459,232.88
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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.