Finding the Fourth Proportional to 1,218,731.08, 1,681,828.37 and 674,855.18
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Solution
The fourth proportional to 1,218,731.08, 1,681,828.37 and 674,855.18 is: 931,288.79
Step by Step Solution
- Step 1: Write the proportion equation
1,218,731.08 : 1,681,828.37 = 674,855.18 : x - Step 2: Convert to fraction form
1,218,731.08/1,681,828.37 = 674,855.18/x - Step 3: Cross multiply
1,218,731.08x = 1,681,828.37 × 674,855.18 - Step 4: Simplify right side
1,218,731.08x = 1,134,990,587,365.46 - Step 5: Solve for x
x = 1,134,990,587,365.46/1,218,731.08 - Step 6: Final answer
x = 931,288.79
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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.