Finding the Fourth Proportional to 1,639,135.20, 2,457,390.60 and 691,726.80
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Solution
The fourth proportional to 1,639,135.20, 2,457,390.60 and 691,726.80 is: 1,037,036.44
Step by Step Solution
- Step 1: Write the proportion equation
1,639,135.20 : 2,457,390.60 = 691,726.80 : x - Step 2: Convert to fraction form
1,639,135.20/2,457,390.60 = 691,726.80/x - Step 3: Cross multiply
1,639,135.20x = 2,457,390.60 × 691,726.80 - Step 4: Simplify right side
1,639,135.20x = 1,699,842,936,088.08 - Step 5: Solve for x
x = 1,699,842,936,088.08/1,639,135.20 - Step 6: Final answer
x = 1,037,036.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.