Finding the Fourth Proportional to 589,378.38, 812,698.56 and 398,059.62
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Solution
The fourth proportional to 589,378.38, 812,698.56 and 398,059.62 is: 548,887.59
Step by Step Solution
- Step 1: Write the proportion equation
589,378.38 : 812,698.56 = 398,059.62 : x - Step 2: Convert to fraction form
589,378.38/812,698.56 = 398,059.62/x - Step 3: Cross multiply
589,378.38x = 812,698.56 × 398,059.62 - Step 4: Simplify right side
589,378.38x = 323,502,479,968.15 - Step 5: Solve for x
x = 323,502,479,968.15/589,378.38 - Step 6: Final answer
x = 548,887.59
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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.