Finding the Fourth Proportional to 762,689.13, 1,143,585.12 and 289,407.75
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Solution
The fourth proportional to 762,689.13, 1,143,585.12 and 289,407.75 is: 433,941.41
Step by Step Solution
- Step 1: Write the proportion equation
762,689.13 : 1,143,585.12 = 289,407.75 : x - Step 2: Convert to fraction form
762,689.13/1,143,585.12 = 289,407.75/x - Step 3: Cross multiply
762,689.13x = 1,143,585.12 × 289,407.75 - Step 4: Simplify right side
762,689.13x = 330,962,396,512.68 - Step 5: Solve for x
x = 330,962,396,512.68/762,689.13 - Step 6: Final answer
x = 433,941.41
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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.