Finding the Fourth Proportional to 818,823.84, 1,129,961.82 and 456,239.88
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Solution
The fourth proportional to 818,823.84, 1,129,961.82 and 456,239.88 is: 629,602.63
Step by Step Solution
- Step 1: Write the proportion equation
818,823.84 : 1,129,961.82 = 456,239.88 : x - Step 2: Convert to fraction form
818,823.84/1,129,961.82 = 456,239.88/x - Step 3: Cross multiply
818,823.84x = 1,129,961.82 × 456,239.88 - Step 4: Simplify right side
818,823.84x = 515,533,645,161.38 - Step 5: Solve for x
x = 515,533,645,161.38/818,823.84 - Step 6: Final answer
x = 629,602.63
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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.