Finding the Fourth Proportional to 520,879.80, 781,319.70 and 165,929.70
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Solution
The fourth proportional to 520,879.80, 781,319.70 and 165,929.70 is: 248,894.55
Step by Step Solution
- Step 1: Write the proportion equation
520,879.80 : 781,319.70 = 165,929.70 : x - Step 2: Convert to fraction form
520,879.80/781,319.70 = 165,929.70/x - Step 3: Cross multiply
520,879.80x = 781,319.70 × 165,929.70 - Step 4: Simplify right side
520,879.80x = 129,644,143,425.09 - Step 5: Solve for x
x = 129,644,143,425.09/520,879.80 - Step 6: Final answer
x = 248,894.55
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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.