Finding the Fourth Proportional to 712,571.68, 983,313.84 and 390,283.21
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Solution
The fourth proportional to 712,571.68, 983,313.84 and 390,283.21 is: 538,571.62
Step by Step Solution
- Step 1: Write the proportion equation
712,571.68 : 983,313.84 = 390,283.21 : x - Step 2: Convert to fraction form
712,571.68/983,313.84 = 390,283.21/x - Step 3: Cross multiply
712,571.68x = 983,313.84 × 390,283.21 - Step 4: Simplify right side
712,571.68x = 383,770,881,912.63 - Step 5: Solve for x
x = 383,770,881,912.63/712,571.68 - Step 6: Final answer
x = 538,571.62
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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.