Finding the Fourth Proportional to 520,048.10, 778,516.95 and 489,289.70
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Solution
The fourth proportional to 520,048.10, 778,516.95 and 489,289.70 is: 732,471.33
Step by Step Solution
- Step 1: Write the proportion equation
520,048.10 : 778,516.95 = 489,289.70 : x - Step 2: Convert to fraction form
520,048.10/778,516.95 = 489,289.70/x - Step 3: Cross multiply
520,048.10x = 778,516.95 × 489,289.70 - Step 4: Simplify right side
520,048.10x = 380,920,324,910.42 - Step 5: Solve for x
x = 380,920,324,910.42/520,048.10 - Step 6: Final answer
x = 732,471.33
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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.