Finding the Fourth Proportional to 644,112.84, 888,915.96 and 372,230.54
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Solution
The fourth proportional to 644,112.84, 888,915.96 and 372,230.54 is: 513,701.39
Step by Step Solution
- Step 1: Write the proportion equation
644,112.84 : 888,915.96 = 372,230.54 : x - Step 2: Convert to fraction form
644,112.84/888,915.96 = 372,230.54/x - Step 3: Cross multiply
644,112.84x = 888,915.96 × 372,230.54 - Step 4: Simplify right side
644,112.84x = 330,881,663,360.84 - Step 5: Solve for x
x = 330,881,663,360.84/644,112.84 - Step 6: Final answer
x = 513,701.39
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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.