Finding the Fourth Proportional to 499,474.36, 689,275.97 and 318,147.49
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Solution
The fourth proportional to 499,474.36, 689,275.97 and 318,147.49 is: 439,044.39
Step by Step Solution
- Step 1: Write the proportion equation
499,474.36 : 689,275.97 = 318,147.49 : x - Step 2: Convert to fraction form
499,474.36/689,275.97 = 318,147.49/x - Step 3: Cross multiply
499,474.36x = 689,275.97 × 318,147.49 - Step 4: Simplify right side
499,474.36x = 219,291,418,182.08 - Step 5: Solve for x
x = 219,291,418,182.08/499,474.36 - Step 6: Final answer
x = 439,044.39
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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.