Finding the Fourth Proportional to 515,261.68, 711,072.51 and 285,811.49
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Solution
The fourth proportional to 515,261.68, 711,072.51 and 285,811.49 is: 394,426.17
Step by Step Solution
- Step 1: Write the proportion equation
515,261.68 : 711,072.51 = 285,811.49 : x - Step 2: Convert to fraction form
515,261.68/711,072.51 = 285,811.49/x - Step 3: Cross multiply
515,261.68x = 711,072.51 × 285,811.49 - Step 4: Simplify right side
515,261.68x = 203,232,692,698.78 - Step 5: Solve for x
x = 203,232,692,698.78/515,261.68 - Step 6: Final answer
x = 394,426.17
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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.