Finding the Fourth Proportional to 1,292,738.16, 1,939,195.80 and 439,462.56
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Solution
The fourth proportional to 1,292,738.16, 1,939,195.80 and 439,462.56 is: 659,223.95
Step by Step Solution
- Step 1: Write the proportion equation
1,292,738.16 : 1,939,195.80 = 439,462.56 : x - Step 2: Convert to fraction form
1,292,738.16/1,939,195.80 = 439,462.56/x - Step 3: Cross multiply
1,292,738.16x = 1,939,195.80 × 439,462.56 - Step 4: Simplify right side
1,292,738.16x = 852,203,950,609.25 - Step 5: Solve for x
x = 852,203,950,609.25/1,292,738.16 - Step 6: Final answer
x = 659,223.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.