Finding the Fourth Proportional to 1,173,175.13, 1,618,981.68 and 636,631.13
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Solution
The fourth proportional to 1,173,175.13, 1,618,981.68 and 636,631.13 is: 878,550.95
Step by Step Solution
- Step 1: Write the proportion equation
1,173,175.13 : 1,618,981.68 = 636,631.13 : x - Step 2: Convert to fraction form
1,173,175.13/1,618,981.68 = 636,631.13/x - Step 3: Cross multiply
1,173,175.13x = 1,618,981.68 × 636,631.13 - Step 4: Simplify right side
1,173,175.13x = 1,030,694,125,109.63 - Step 5: Solve for x
x = 1,030,694,125,109.63/1,173,175.13 - Step 6: Final answer
x = 878,550.95
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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.