Finding the Fourth Proportional to 1,547,128.98, 2,135,074.80 and 868,115.70
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Solution
The fourth proportional to 1,547,128.98, 2,135,074.80 and 868,115.70 is: 1,198,020.32
Step by Step Solution
- Step 1: Write the proportion equation
1,547,128.98 : 2,135,074.80 = 868,115.70 : x - Step 2: Convert to fraction form
1,547,128.98/2,135,074.80 = 868,115.70/x - Step 3: Cross multiply
1,547,128.98x = 2,135,074.80 × 868,115.70 - Step 4: Simplify right side
1,547,128.98x = 1,853,491,954,554.36 - Step 5: Solve for x
x = 1,853,491,954,554.36/1,547,128.98 - Step 6: Final answer
x = 1,198,020.32
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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.