Finding the Fourth Proportional to 642,612.69, 963,943.34 and 193,397.42
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Solution
The fourth proportional to 642,612.69, 963,943.34 and 193,397.42 is: 290,103.45
Step by Step Solution
- Step 1: Write the proportion equation
642,612.69 : 963,943.34 = 193,397.42 : x - Step 2: Convert to fraction form
642,612.69/963,943.34 = 193,397.42/x - Step 3: Cross multiply
642,612.69x = 963,943.34 × 193,397.42 - Step 4: Simplify right side
642,612.69x = 186,424,156,425.05 - Step 5: Solve for x
x = 186,424,156,425.05/642,612.69 - Step 6: Final answer
x = 290,103.45
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1.5x scale
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.