Finding the Fourth Proportional to 1,289,795.67, 1,779,991.70 and 716,872.14
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Solution
The fourth proportional to 1,289,795.67, 1,779,991.70 and 716,872.14 is: 989,324.50
Step by Step Solution
- Step 1: Write the proportion equation
1,289,795.67 : 1,779,991.70 = 716,872.14 : x - Step 2: Convert to fraction form
1,289,795.67/1,779,991.70 = 716,872.14/x - Step 3: Cross multiply
1,289,795.67x = 1,779,991.70 × 716,872.14 - Step 4: Simplify right side
1,289,795.67x = 1,276,026,455,576.88 - Step 5: Solve for x
x = 1,276,026,455,576.88/1,289,795.67 - Step 6: Final answer
x = 989,324.50
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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.