Finding the Fourth Proportional to 678,802.68, 936,121.86 and 461,337.12
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Solution
The fourth proportional to 678,802.68, 936,121.86 and 461,337.12 is: 636,219.88
Step by Step Solution
- Step 1: Write the proportion equation
678,802.68 : 936,121.86 = 461,337.12 : x - Step 2: Convert to fraction form
678,802.68/936,121.86 = 461,337.12/x - Step 3: Cross multiply
678,802.68x = 936,121.86 × 461,337.12 - Step 4: Simplify right side
678,802.68x = 431,867,762,861.44 - Step 5: Solve for x
x = 431,867,762,861.44/678,802.68 - Step 6: Final answer
x = 636,219.88
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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.