Finding the Fourth Proportional to 915,915.84, 1,263,912.24 and 507,988.41
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Solution
The fourth proportional to 915,915.84, 1,263,912.24 and 507,988.41 is: 700,995.38
Step by Step Solution
- Step 1: Write the proportion equation
915,915.84 : 1,263,912.24 = 507,988.41 : x - Step 2: Convert to fraction form
915,915.84/1,263,912.24 = 507,988.41/x - Step 3: Cross multiply
915,915.84x = 1,263,912.24 × 507,988.41 - Step 4: Simplify right side
915,915.84x = 642,052,769,177.14 - Step 5: Solve for x
x = 642,052,769,177.14/915,915.84 - Step 6: Final answer
x = 700,995.38
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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.