Finding the Fourth Proportional to 818,274.28, 1,129,137.68 and 455,731.88
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Solution
The fourth proportional to 818,274.28, 1,129,137.68 and 455,731.88 is: 628,864.98
Step by Step Solution
- Step 1: Write the proportion equation
818,274.28 : 1,129,137.68 = 455,731.88 : x - Step 2: Convert to fraction form
818,274.28/1,129,137.68 = 455,731.88/x - Step 3: Cross multiply
818,274.28x = 1,129,137.68 × 455,731.88 - Step 4: Simplify right side
818,274.28x = 514,584,037,685.24 - Step 5: Solve for x
x = 514,584,037,685.24/818,274.28 - Step 6: Final answer
x = 628,864.98
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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.