Finding the Fourth Proportional to 426,323.60, 639,715.80 and 189,702.80
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Solution
The fourth proportional to 426,323.60, 639,715.80 and 189,702.80 is: 284,656.72
Step by Step Solution
- Step 1: Write the proportion equation
426,323.60 : 639,715.80 = 189,702.80 : x - Step 2: Convert to fraction form
426,323.60/639,715.80 = 189,702.80/x - Step 3: Cross multiply
426,323.60x = 639,715.80 × 189,702.80 - Step 4: Simplify right side
426,323.60x = 121,355,878,464.24 - Step 5: Solve for x
x = 121,355,878,464.24/426,323.60 - Step 6: Final answer
x = 284,656.72
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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.