Finding the Fourth Proportional to 5,121,771.36, 7,068,029.92 and 2,829,915.76
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Solution
The fourth proportional to 5,121,771.36, 7,068,029.92 and 2,829,915.76 is: 3,905,275.71
Step by Step Solution
- Step 1: Write the proportion equation
5,121,771.36 : 7,068,029.92 = 2,829,915.76 : x - Step 2: Convert to fraction form
5,121,771.36/7,068,029.92 = 2,829,915.76/x - Step 3: Cross multiply
5,121,771.36x = 7,068,029.92 × 2,829,915.76 - Step 4: Simplify right side
5,121,771.36x = 20,001,929,262,759.54 - Step 5: Solve for x
x = 20,001,929,262,759.54/5,121,771.36 - Step 6: Final answer
x = 3,905,275.71
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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.