Finding the Fourth Proportional to 1,289,506.91, 1,779,438.17 and 716,512.91
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Solution
The fourth proportional to 1,289,506.91, 1,779,438.17 and 716,512.91 is: 988,742.60
Step by Step Solution
- Step 1: Write the proportion equation
1,289,506.91 : 1,779,438.17 = 716,512.91 : x - Step 2: Convert to fraction form
1,289,506.91/1,779,438.17 = 716,512.91/x - Step 3: Cross multiply
1,289,506.91x = 1,779,438.17 × 716,512.91 - Step 4: Simplify right side
1,289,506.91x = 1,274,990,414,245.87 - Step 5: Solve for x
x = 1,274,990,414,245.87/1,289,506.91 - Step 6: Final answer
x = 988,742.60
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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.