Finding the Fourth Proportional to 640,188.68, 883,495.82 and 353,702.62
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Solution
The fourth proportional to 640,188.68, 883,495.82 and 353,702.62 is: 488,129.20
Step by Step Solution
- Step 1: Write the proportion equation
640,188.68 : 883,495.82 = 353,702.62 : x - Step 2: Convert to fraction form
640,188.68/883,495.82 = 353,702.62/x - Step 3: Cross multiply
640,188.68x = 883,495.82 × 353,702.62 - Step 4: Simplify right side
640,188.68x = 312,494,786,293.05 - Step 5: Solve for x
x = 312,494,786,293.05/640,188.68 - Step 6: Final answer
x = 488,129.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.