Finding the Fourth Proportional to 1,189,316.31, 1,641,257.36 and 645,451.98
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Solution
The fourth proportional to 1,189,316.31, 1,641,257.36 and 645,451.98 is: 890,724.19
Step by Step Solution
- Step 1: Write the proportion equation
1,189,316.31 : 1,641,257.36 = 645,451.98 : x - Step 2: Convert to fraction form
1,189,316.31/1,641,257.36 = 645,451.98/x - Step 3: Cross multiply
1,189,316.31x = 1,641,257.36 × 645,451.98 - Step 4: Simplify right side
1,189,316.31x = 1,059,352,812,701.57 - Step 5: Solve for x
x = 1,059,352,812,701.57/1,189,316.31 - Step 6: Final answer
x = 890,724.19
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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.