Finding the Fourth Proportional to 818,538.84, 1,129,433.70 and 455,953.68
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Solution
The fourth proportional to 818,538.84, 1,129,433.70 and 455,953.68 is: 629,132.58
Step by Step Solution
- Step 1: Write the proportion equation
818,538.84 : 1,129,433.70 = 455,953.68 : x - Step 2: Convert to fraction form
818,538.84/1,129,433.70 = 455,953.68/x - Step 3: Cross multiply
818,538.84x = 1,129,433.70 × 455,953.68 - Step 4: Simplify right side
818,538.84x = 514,969,451,831.02 - Step 5: Solve for x
x = 514,969,451,831.02/818,538.84 - Step 6: Final answer
x = 629,132.58
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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.