Finding the Fourth Proportional to 1,231,398.75, 1,699,314.19 and 687,543.80
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Solution
The fourth proportional to 1,231,398.75, 1,699,314.19 and 687,543.80 is: 948,801.45
Step by Step Solution
- Step 1: Write the proportion equation
1,231,398.75 : 1,699,314.19 = 687,543.80 : x - Step 2: Convert to fraction form
1,231,398.75/1,699,314.19 = 687,543.80/x - Step 3: Cross multiply
1,231,398.75x = 1,699,314.19 × 687,543.80 - Step 4: Simplify right side
1,231,398.75x = 1,168,352,925,371.09 - Step 5: Solve for x
x = 1,168,352,925,371.09/1,231,398.75 - Step 6: Final answer
x = 948,801.45
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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.