Finding the Fourth Proportional to 489,771.70, 734,657.55 and 411,039.70
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Solution
The fourth proportional to 489,771.70, 734,657.55 and 411,039.70 is: 616,559.55
Step by Step Solution
- Step 1: Write the proportion equation
489,771.70 : 734,657.55 = 411,039.70 : x - Step 2: Convert to fraction form
489,771.70/734,657.55 = 411,039.70/x - Step 3: Cross multiply
489,771.70x = 734,657.55 × 411,039.70 - Step 4: Simplify right side
489,771.70x = 301,973,418,954.74 - Step 5: Solve for x
x = 301,973,418,954.74/489,771.70 - Step 6: Final answer
x = 616,559.55
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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.