Finding the Fourth Proportional to 829,421.76, 1,243,391.76 and 323,865.12
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Solution
The fourth proportional to 829,421.76, 1,243,391.76 and 323,865.12 is: 485,508.39
Step by Step Solution
- Step 1: Write the proportion equation
829,421.76 : 1,243,391.76 = 323,865.12 : x - Step 2: Convert to fraction form
829,421.76/1,243,391.76 = 323,865.12/x - Step 3: Cross multiply
829,421.76x = 1,243,391.76 × 323,865.12 - Step 4: Simplify right side
829,421.76x = 402,691,221,559.41 - Step 5: Solve for x
x = 402,691,221,559.41/829,421.76 - Step 6: Final answer
x = 485,508.39
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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.