Finding the Fourth Proportional to 1,297,487.97, 1,790,447.09 and 724,416.21
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Solution
The fourth proportional to 1,297,487.97, 1,790,447.09 and 724,416.21 is: 999,646.18
Step by Step Solution
- Step 1: Write the proportion equation
1,297,487.97 : 1,790,447.09 = 724,416.21 : x - Step 2: Convert to fraction form
1,297,487.97/1,790,447.09 = 724,416.21/x - Step 3: Cross multiply
1,297,487.97x = 1,790,447.09 × 724,416.21 - Step 4: Simplify right side
1,297,487.97x = 1,297,028,891,521.25 - Step 5: Solve for x
x = 1,297,028,891,521.25/1,297,487.97 - Step 6: Final answer
x = 999,646.18
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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.