Finding the Fourth Proportional to 787,317.12, 1,086,478.20 and 447,763.68
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Solution
The fourth proportional to 787,317.12, 1,086,478.20 and 447,763.68 is: 617,902.83
Step by Step Solution
- Step 1: Write the proportion equation
787,317.12 : 1,086,478.20 = 447,763.68 : x - Step 2: Convert to fraction form
787,317.12/1,086,478.20 = 447,763.68/x - Step 3: Cross multiply
787,317.12x = 1,086,478.20 × 447,763.68 - Step 4: Simplify right side
787,317.12x = 486,485,477,071.78 - Step 5: Solve for x
x = 486,485,477,071.78/787,317.12 - Step 6: Final answer
x = 617,902.83
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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.