Finding the Fourth Proportional to 1,291,613.99, 1,782,674.12 and 855,261.72
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Solution
The fourth proportional to 1,291,613.99, 1,782,674.12 and 855,261.72 is: 1,180,424.61
Step by Step Solution
- Step 1: Write the proportion equation
1,291,613.99 : 1,782,674.12 = 855,261.72 : x - Step 2: Convert to fraction form
1,291,613.99/1,782,674.12 = 855,261.72/x - Step 3: Cross multiply
1,291,613.99x = 1,782,674.12 × 855,261.72 - Step 4: Simplify right side
1,291,613.99x = 1,524,652,936,208.84 - Step 5: Solve for x
x = 1,524,652,936,208.84/1,291,613.99 - Step 6: Final answer
x = 1,180,424.61
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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.