Finding the Fourth Proportional to 499,277.20, 748,138.20 and 432,403.60
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Solution
The fourth proportional to 499,277.20, 748,138.20 and 432,403.60 is: 647,931.95
Step by Step Solution
- Step 1: Write the proportion equation
499,277.20 : 748,138.20 = 432,403.60 : x - Step 2: Convert to fraction form
499,277.20/748,138.20 = 432,403.60/x - Step 3: Cross multiply
499,277.20x = 748,138.20 × 432,403.60 - Step 4: Simplify right side
499,277.20x = 323,497,650,977.52 - Step 5: Solve for x
x = 323,497,650,977.52/499,277.20 - Step 6: Final answer
x = 647,931.95
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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.