Finding the Fourth Proportional to 738,356.42, 1,018,931.87 and 398,824.67
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Solution
The fourth proportional to 738,356.42, 1,018,931.87 and 398,824.67 is: 550,378.05
Step by Step Solution
- Step 1: Write the proportion equation
738,356.42 : 1,018,931.87 = 398,824.67 : x - Step 2: Convert to fraction form
738,356.42/1,018,931.87 = 398,824.67/x - Step 3: Cross multiply
738,356.42x = 1,018,931.87 × 398,824.67 - Step 4: Simplify right side
738,356.42x = 406,375,166,805.23 - Step 5: Solve for x
x = 406,375,166,805.23/738,356.42 - Step 6: Final answer
x = 550,378.05
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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.