Finding the Fourth Proportional to 1,263,438.57, 1,743,541.40 and 690,478.80
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Solution
The fourth proportional to 1,263,438.57, 1,743,541.40 and 690,478.80 is: 952,858.65
Step by Step Solution
- Step 1: Write the proportion equation
1,263,438.57 : 1,743,541.40 = 690,478.80 : x - Step 2: Convert to fraction form
1,263,438.57/1,743,541.40 = 690,478.80/x - Step 3: Cross multiply
1,263,438.57x = 1,743,541.40 × 690,478.80 - Step 4: Simplify right side
1,263,438.57x = 1,203,878,368,810.24 - Step 5: Solve for x
x = 1,203,878,368,810.24/1,263,438.57 - Step 6: Final answer
x = 952,858.65
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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.