Finding the Fourth Proportional to 853,423.16, 1,177,759.74 and 490,847.12
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Solution
The fourth proportional to 853,423.16, 1,177,759.74 and 490,847.12 is: 677,389.60
Step by Step Solution
- Step 1: Write the proportion equation
853,423.16 : 1,177,759.74 = 490,847.12 : x - Step 2: Convert to fraction form
853,423.16/1,177,759.74 = 490,847.12/x - Step 3: Cross multiply
853,423.16x = 1,177,759.74 × 490,847.12 - Step 4: Simplify right side
853,423.16x = 578,099,976,430.95 - Step 5: Solve for x
x = 578,099,976,430.95/853,423.16 - Step 6: Final answer
x = 677,389.60
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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.