Finding the Fourth Proportional to 407,365.76, 562,438.86 and 311,701.52
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Solution
The fourth proportional to 407,365.76, 562,438.86 and 311,701.52 is: 430,357.84
Step by Step Solution
- Step 1: Write the proportion equation
407,365.76 : 562,438.86 = 311,701.52 : x - Step 2: Convert to fraction form
407,365.76/562,438.86 = 311,701.52/x - Step 3: Cross multiply
407,365.76x = 562,438.86 × 311,701.52 - Step 4: Simplify right side
407,365.76x = 175,313,047,806.28 - Step 5: Solve for x
x = 175,313,047,806.28/407,365.76 - Step 6: Final answer
x = 430,357.84
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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.