Finding the Fourth Proportional to 1,505,726.42, 2,078,286.05 and 861,348.74
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Solution
The fourth proportional to 1,505,726.42, 2,078,286.05 and 861,348.74 is: 1,188,880.69
Step by Step Solution
- Step 1: Write the proportion equation
1,505,726.42 : 2,078,286.05 = 861,348.74 : x - Step 2: Convert to fraction form
1,505,726.42/2,078,286.05 = 861,348.74/x - Step 3: Cross multiply
1,505,726.42x = 2,078,286.05 × 861,348.74 - Step 4: Simplify right side
1,505,726.42x = 1,790,129,062,289.02 - Step 5: Solve for x
x = 1,790,129,062,289.02/1,505,726.42 - Step 6: Final answer
x = 1,188,880.69
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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.