Finding the Fourth Proportional to 642,541.98, 886,685.63 and 356,088.72
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Solution
The fourth proportional to 642,541.98, 886,685.63 and 356,088.72 is: 491,390.07
Step by Step Solution
- Step 1: Write the proportion equation
642,541.98 : 886,685.63 = 356,088.72 : x - Step 2: Convert to fraction form
642,541.98/886,685.63 = 356,088.72/x - Step 3: Cross multiply
642,541.98x = 886,685.63 × 356,088.72 - Step 4: Simplify right side
642,541.98x = 315,738,749,248.65 - Step 5: Solve for x
x = 315,738,749,248.65/642,541.98 - Step 6: Final answer
x = 491,390.07
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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.