Finding the Fourth Proportional to 1,387,672.84, 1,915,085.22 and 775,944.68
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Solution
The fourth proportional to 1,387,672.84, 1,915,085.22 and 775,944.68 is: 1,070,857.73
Step by Step Solution
- Step 1: Write the proportion equation
1,387,672.84 : 1,915,085.22 = 775,944.68 : x - Step 2: Convert to fraction form
1,387,672.84/1,915,085.22 = 775,944.68/x - Step 3: Cross multiply
1,387,672.84x = 1,915,085.22 × 775,944.68 - Step 4: Simplify right side
1,387,672.84x = 1,486,000,188,205.63 - Step 5: Solve for x
x = 1,486,000,188,205.63/1,387,672.84 - Step 6: Final answer
x = 1,070,857.73
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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.