Finding the Fourth Proportional to 470,318.97, 705,430.42 and 128,792.79
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Solution
The fourth proportional to 470,318.97, 705,430.42 and 128,792.79 is: 193,176.03
Step by Step Solution
- Step 1: Write the proportion equation
470,318.97 : 705,430.42 = 128,792.79 : x - Step 2: Convert to fraction form
470,318.97/705,430.42 = 128,792.79/x - Step 3: Cross multiply
470,318.97x = 705,430.42 × 128,792.79 - Step 4: Simplify right side
470,318.97x = 90,854,351,620.69 - Step 5: Solve for x
x = 90,854,351,620.69/470,318.97 - Step 6: Final answer
x = 193,176.03
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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.