Finding the Fourth Proportional to 645,689.88, 891,063.99 and 359,236.62
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Solution
The fourth proportional to 645,689.88, 891,063.99 and 359,236.62 is: 495,753.19
Step by Step Solution
- Step 1: Write the proportion equation
645,689.88 : 891,063.99 = 359,236.62 : x - Step 2: Convert to fraction form
645,689.88/891,063.99 = 359,236.62/x - Step 3: Cross multiply
645,689.88x = 891,063.99 × 359,236.62 - Step 4: Simplify right side
645,689.88x = 320,102,815,971.31 - Step 5: Solve for x
x = 320,102,815,971.31/645,689.88 - Step 6: Final answer
x = 495,753.19
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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.