Finding the Fourth Proportional to 768,280.20, 1,152,420.30 and 207,313.80
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Solution
The fourth proportional to 768,280.20, 1,152,420.30 and 207,313.80 is: 310,970.70
Step by Step Solution
- Step 1: Write the proportion equation
768,280.20 : 1,152,420.30 = 207,313.80 : x - Step 2: Convert to fraction form
768,280.20/1,152,420.30 = 207,313.80/x - Step 3: Cross multiply
768,280.20x = 1,152,420.30 × 207,313.80 - Step 4: Simplify right side
768,280.20x = 238,912,631,590.14 - Step 5: Solve for x
x = 238,912,631,590.14/768,280.20 - Step 6: Final answer
x = 310,970.70
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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.