Finding the Fourth Proportional to 1,385,824.40, 2,079,427.80 and 787,245.20
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Solution
The fourth proportional to 1,385,824.40, 2,079,427.80 and 787,245.20 is: 1,181,260.45
Step by Step Solution
- Step 1: Write the proportion equation
1,385,824.40 : 2,079,427.80 = 787,245.20 : x - Step 2: Convert to fraction form
1,385,824.40/2,079,427.80 = 787,245.20/x - Step 3: Cross multiply
1,385,824.40x = 2,079,427.80 × 787,245.20 - Step 4: Simplify right side
1,385,824.40x = 1,637,019,554,296.56 - Step 5: Solve for x
x = 1,637,019,554,296.56/1,385,824.40 - Step 6: Final answer
x = 1,181,260.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.