Finding the Fourth Proportional to 540,308.38, 809,738.13 and 420,509.99
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Solution
The fourth proportional to 540,308.38, 809,738.13 and 420,509.99 is: 630,201.17
Step by Step Solution
- Step 1: Write the proportion equation
540,308.38 : 809,738.13 = 420,509.99 : x - Step 2: Convert to fraction form
540,308.38/809,738.13 = 420,509.99/x - Step 3: Cross multiply
540,308.38x = 809,738.13 × 420,509.99 - Step 4: Simplify right side
540,308.38x = 340,502,972,948.92 - Step 5: Solve for x
x = 340,502,972,948.92/540,308.38 - Step 6: Final answer
x = 630,201.17
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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.