Finding the Fourth Proportional to 1,387,571.24, 1,915,438.55 and 843,881.66
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Solution
The fourth proportional to 1,387,571.24, 1,915,438.55 and 843,881.66 is: 1,164,915.65
Step by Step Solution
- Step 1: Write the proportion equation
1,387,571.24 : 1,915,438.55 = 843,881.66 : x - Step 2: Convert to fraction form
1,387,571.24/1,915,438.55 = 843,881.66/x - Step 3: Cross multiply
1,387,571.24x = 1,915,438.55 × 843,881.66 - Step 4: Simplify right side
1,387,571.24x = 1,616,403,458,982.58 - Step 5: Solve for x
x = 1,616,403,458,982.58/1,387,571.24 - Step 6: Final answer
x = 1,164,915.65
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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.