Finding the Fourth Proportional to 6,421,489.76, 8,862,054 and 3,559,921.76
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Solution
The fourth proportional to 6,421,489.76, 8,862,054 and 3,559,921.76 is: 4,912,912.74
Step by Step Solution
- Step 1: Write the proportion equation
6,421,489.76 : 8,862,054 = 3,559,921.76 : x - Step 2: Convert to fraction form
6,421,489.76/8,862,054 = 3,559,921.76/x - Step 3: Cross multiply
6,421,489.76x = 8,862,054 × 3,559,921.76 - Step 4: Simplify right side
6,421,489.76x = 31,548,218,872,895.04 - Step 5: Solve for x
x = 31,548,218,872,895.04/6,421,489.76 - Step 6: Final answer
x = 4,912,912.74
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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.