Finding the Fourth Proportional to 3,967,609.60, 5,475,355.68 and 2,156,812.48
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Solution
The fourth proportional to 3,967,609.60, 5,475,355.68 and 2,156,812.48 is: 2,976,430.81
Step by Step Solution
- Step 1: Write the proportion equation
3,967,609.60 : 5,475,355.68 = 2,156,812.48 : x - Step 2: Convert to fraction form
3,967,609.60/5,475,355.68 = 2,156,812.48/x - Step 3: Cross multiply
3,967,609.60x = 5,475,355.68 × 2,156,812.48 - Step 4: Simplify right side
3,967,609.60x = 11,809,315,463,062.88 - Step 5: Solve for x
x = 11,809,315,463,062.88/3,967,609.60 - Step 6: Final answer
x = 2,976,430.81
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.