Finding the Fourth Proportional to 644,687.71, 889,652.97 and 358,208.53
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Solution
The fourth proportional to 644,687.71, 889,652.97 and 358,208.53 is: 494,318.84
Step by Step Solution
- Step 1: Write the proportion equation
644,687.71 : 889,652.97 = 358,208.53 : x - Step 2: Convert to fraction form
644,687.71/889,652.97 = 358,208.53/x - Step 3: Cross multiply
644,687.71x = 889,652.97 × 358,208.53 - Step 4: Simplify right side
644,687.71x = 318,681,280,369.70 - Step 5: Solve for x
x = 318,681,280,369.70/644,687.71 - Step 6: Final answer
x = 494,318.84
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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.