Finding the Fourth Proportional to 1,389,256.81, 1,915,336.60 and 1,001,747.95
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Solution
The fourth proportional to 1,389,256.81, 1,915,336.60 and 1,001,747.95 is: 1,381,086.99
Step by Step Solution
- Step 1: Write the proportion equation
1,389,256.81 : 1,915,336.60 = 1,001,747.95 : x - Step 2: Convert to fraction form
1,389,256.81/1,915,336.60 = 1,001,747.95/x - Step 3: Cross multiply
1,389,256.81x = 1,915,336.60 × 1,001,747.95 - Step 4: Simplify right side
1,389,256.81x = 1,918,684,512,609.97 - Step 5: Solve for x
x = 1,918,684,512,609.97/1,389,256.81 - Step 6: Final answer
x = 1,381,086.99
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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.