Finding the Fourth Proportional to 716,069.92, 988,155.60 and 393,779.68
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Solution
The fourth proportional to 716,069.92, 988,155.60 and 393,779.68 is: 543,404.47
Step by Step Solution
- Step 1: Write the proportion equation
716,069.92 : 988,155.60 = 393,779.68 : x - Step 2: Convert to fraction form
716,069.92/988,155.60 = 393,779.68/x - Step 3: Cross multiply
716,069.92x = 988,155.60 × 393,779.68 - Step 4: Simplify right side
716,069.92x = 389,115,595,958.21 - Step 5: Solve for x
x = 389,115,595,958.21/716,069.92 - Step 6: Final answer
x = 543,404.47
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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.