Finding the Fourth Proportional to 1,291,615.99, 1,782,676.88 and 855,263.72
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Solution
The fourth proportional to 1,291,615.99, 1,782,676.88 and 855,263.72 is: 1,180,427.37
Step by Step Solution
- Step 1: Write the proportion equation
1,291,615.99 : 1,782,676.88 = 855,263.72 : x - Step 2: Convert to fraction form
1,291,615.99/1,782,676.88 = 855,263.72/x - Step 3: Cross multiply
1,291,615.99x = 1,782,676.88 × 855,263.72 - Step 4: Simplify right side
1,291,615.99x = 1,524,658,859,946.79 - Step 5: Solve for x
x = 1,524,658,859,946.79/1,291,615.99 - Step 6: Final answer
x = 1,180,427.37
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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.