Finding the Fourth Proportional to 640,223.05, 883,505.98 and 353,741.09
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Solution
The fourth proportional to 640,223.05, 883,505.98 and 353,741.09 is: 488,161.69
Step by Step Solution
- Step 1: Write the proportion equation
640,223.05 : 883,505.98 = 353,741.09 : x - Step 2: Convert to fraction form
640,223.05/883,505.98 = 353,741.09/x - Step 3: Cross multiply
640,223.05x = 883,505.98 × 353,741.09 - Step 4: Simplify right side
640,223.05x = 312,532,368,386.72 - Step 5: Solve for x
x = 312,532,368,386.72/640,223.05 - Step 6: Final answer
x = 488,161.69
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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.