Finding the Fourth Proportional to 1,289,819.97, 1,779,938.67 and 716,847.84
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Solution
The fourth proportional to 1,289,819.97, 1,779,938.67 and 716,847.84 is: 989,242.86
Step by Step Solution
- Step 1: Write the proportion equation
1,289,819.97 : 1,779,938.67 = 716,847.84 : x - Step 2: Convert to fraction form
1,289,819.97/1,779,938.67 = 716,847.84/x - Step 3: Cross multiply
1,289,819.97x = 1,779,938.67 × 716,847.84 - Step 4: Simplify right side
1,289,819.97x = 1,275,945,190,921.97 - Step 5: Solve for x
x = 1,275,945,190,921.97/1,289,819.97 - Step 6: Final answer
x = 989,242.86
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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.