Finding the Fourth Proportional to 919,609.70, 1,379,398.45 and 413,812.70
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Solution
The fourth proportional to 919,609.70, 1,379,398.45 and 413,812.70 is: 620,711.81
Step by Step Solution
- Step 1: Write the proportion equation
919,609.70 : 1,379,398.45 = 413,812.70 : x - Step 2: Convert to fraction form
919,609.70/1,379,398.45 = 413,812.70/x - Step 3: Cross multiply
919,609.70x = 1,379,398.45 × 413,812.70 - Step 4: Simplify right side
919,609.70x = 570,812,596,970.32 - Step 5: Solve for x
x = 570,812,596,970.32/919,609.70 - Step 6: Final answer
x = 620,711.81
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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.