Finding the Fourth Proportional to 691,973.36, 954,956.41 and 390,160.88
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Solution
The fourth proportional to 691,973.36, 954,956.41 and 390,160.88 is: 538,440.72
Step by Step Solution
- Step 1: Write the proportion equation
691,973.36 : 954,956.41 = 390,160.88 : x - Step 2: Convert to fraction form
691,973.36/954,956.41 = 390,160.88/x - Step 3: Cross multiply
691,973.36x = 954,956.41 × 390,160.88 - Step 4: Simplify right side
691,973.36x = 372,586,633,287.24 - Step 5: Solve for x
x = 372,586,633,287.24/691,973.36 - Step 6: Final answer
x = 538,440.72
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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.