Finding the Fourth Proportional to 640,441.68, 883,756.35 and 353,961.69
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Solution
The fourth proportional to 640,441.68, 883,756.35 and 353,961.69 is: 488,437.75
Step by Step Solution
- Step 1: Write the proportion equation
640,441.68 : 883,756.35 = 353,961.69 : x - Step 2: Convert to fraction form
640,441.68/883,756.35 = 353,961.69/x - Step 3: Cross multiply
640,441.68x = 883,756.35 × 353,961.69 - Step 4: Simplify right side
640,441.68x = 312,815,891,194.23 - Step 5: Solve for x
x = 312,815,891,194.23/640,441.68 - Step 6: Final answer
x = 488,437.75
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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.