Finding the Fourth Proportional to 1,392,484, 1,921,629.84 and 788,912.80
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Solution
The fourth proportional to 1,392,484, 1,921,629.84 and 788,912.80 is: 1,088,700.75
Step by Step Solution
- Step 1: Write the proportion equation
1,392,484 : 1,921,629.84 = 788,912.80 : x - Step 2: Convert to fraction form
1,392,484/1,921,629.84 = 788,912.80/x - Step 3: Cross multiply
1,392,484x = 1,921,629.84 × 788,912.80 - Step 4: Simplify right side
1,392,484x = 1,515,998,377,637.95 - Step 5: Solve for x
x = 1,515,998,377,637.95/1,392,484 - Step 6: Final answer
x = 1,088,700.75
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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.