Finding the Fourth Proportional to 1,292,197.32, 1,782,927.26 and 1,086,248.70
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Solution
The fourth proportional to 1,292,197.32, 1,782,927.26 and 1,086,248.70 is: 1,498,766.78
Step by Step Solution
- Step 1: Write the proportion equation
1,292,197.32 : 1,782,927.26 = 1,086,248.70 : x - Step 2: Convert to fraction form
1,292,197.32/1,782,927.26 = 1,086,248.70/x - Step 3: Cross multiply
1,292,197.32x = 1,782,927.26 × 1,086,248.70 - Step 4: Simplify right side
1,292,197.32x = 1,936,702,418,369.56 - Step 5: Solve for x
x = 1,936,702,418,369.56/1,292,197.32 - Step 6: Final answer
x = 1,498,766.78
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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.