Finding the Fourth Proportional to 1,178,671.62, 1,626,140.17 and 771,006.18
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Solution
The fourth proportional to 1,178,671.62, 1,626,140.17 and 771,006.18 is: 1,063,709.43
Step by Step Solution
- Step 1: Write the proportion equation
1,178,671.62 : 1,626,140.17 = 771,006.18 : x - Step 2: Convert to fraction form
1,178,671.62/1,626,140.17 = 771,006.18/x - Step 3: Cross multiply
1,178,671.62x = 1,626,140.17 × 771,006.18 - Step 4: Simplify right side
1,178,671.62x = 1,253,764,120,616.25 - Step 5: Solve for x
x = 1,253,764,120,616.25/1,178,671.62 - Step 6: Final answer
x = 1,063,709.43
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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.