Finding the Fourth Proportional to 1,105,062.16, 1,525,120.80 and 621,647.68
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Solution
The fourth proportional to 1,105,062.16, 1,525,120.80 and 621,647.68 is: 857,949.75
Step by Step Solution
- Step 1: Write the proportion equation
1,105,062.16 : 1,525,120.80 = 621,647.68 : x - Step 2: Convert to fraction form
1,105,062.16/1,525,120.80 = 621,647.68/x - Step 3: Cross multiply
1,105,062.16x = 1,525,120.80 × 621,647.68 - Step 4: Simplify right side
1,105,062.16x = 948,087,807,039.74 - Step 5: Solve for x
x = 948,087,807,039.74/1,105,062.16 - Step 6: Final answer
x = 857,949.75
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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.