Finding the Fourth Proportional to 818,562.28, 1,129,649.97 and 455,986.03
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Solution
The fourth proportional to 818,562.28, 1,129,649.97 and 455,986.03 is: 629,279.67
Step by Step Solution
- Step 1: Write the proportion equation
818,562.28 : 1,129,649.97 = 455,986.03 : x - Step 2: Convert to fraction form
818,562.28/1,129,649.97 = 455,986.03/x - Step 3: Cross multiply
818,562.28x = 1,129,649.97 × 455,986.03 - Step 4: Simplify right side
818,562.28x = 515,104,605,109.92 - Step 5: Solve for x
x = 515,104,605,109.92/818,562.28 - Step 6: Final answer
x = 629,279.67
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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.