Finding the Fourth Proportional to 768,017.16, 1,059,863.94 and 428,478.12
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Solution
The fourth proportional to 768,017.16, 1,059,863.94 and 428,478.12 is: 591,299.95
Step by Step Solution
- Step 1: Write the proportion equation
768,017.16 : 1,059,863.94 = 428,478.12 : x - Step 2: Convert to fraction form
768,017.16/1,059,863.94 = 428,478.12/x - Step 3: Cross multiply
768,017.16x = 1,059,863.94 × 428,478.12 - Step 4: Simplify right side
768,017.16x = 454,128,508,466.99 - Step 5: Solve for x
x = 454,128,508,466.99/768,017.16 - Step 6: Final answer
x = 591,299.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.