Finding the Fourth Proportional to 786,903.12, 1,180,419.71 and 331,626.06
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Solution
The fourth proportional to 786,903.12, 1,180,419.71 and 331,626.06 is: 497,466.49
Step by Step Solution
- Step 1: Write the proportion equation
786,903.12 : 1,180,419.71 = 331,626.06 : x - Step 2: Convert to fraction form
786,903.12/1,180,419.71 = 331,626.06/x - Step 3: Cross multiply
786,903.12x = 1,180,419.71 × 331,626.06 - Step 4: Simplify right side
786,903.12x = 391,457,935,915.51 - Step 5: Solve for x
x = 391,457,935,915.51/786,903.12 - Step 6: Final answer
x = 497,466.49
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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.