Finding the Fourth Proportional to 824,257.62, 1,134,831.87 and 642,736.62
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Solution
The fourth proportional to 824,257.62, 1,134,831.87 and 642,736.62 is: 884,915.08
Step by Step Solution
- Step 1: Write the proportion equation
824,257.62 : 1,134,831.87 = 642,736.62 : x - Step 2: Convert to fraction form
824,257.62/1,134,831.87 = 642,736.62/x - Step 3: Cross multiply
824,257.62x = 1,134,831.87 × 642,736.62 - Step 4: Simplify right side
824,257.62x = 729,398,000,392.08 - Step 5: Solve for x
x = 729,398,000,392.08/824,257.62 - Step 6: Final answer
x = 884,915.08
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1.5x scale
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.