Finding the Fourth Proportional to 771,445.09, 1,157,352.39 and 321,915.90
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Solution
The fourth proportional to 771,445.09, 1,157,352.39 and 321,915.90 is: 482,950.94
Step by Step Solution
- Step 1: Write the proportion equation
771,445.09 : 1,157,352.39 = 321,915.90 : x - Step 2: Convert to fraction form
771,445.09/1,157,352.39 = 321,915.90/x - Step 3: Cross multiply
771,445.09x = 1,157,352.39 × 321,915.90 - Step 4: Simplify right side
771,445.09x = 372,570,130,457.24 - Step 5: Solve for x
x = 372,570,130,457.24/771,445.09 - Step 6: Final answer
x = 482,950.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.