Finding the Fourth Proportional to 1,189,140.74, 1,641,005.89 and 645,262.69
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Solution
The fourth proportional to 1,189,140.74, 1,641,005.89 and 645,262.69 is: 890,457.99
Step by Step Solution
- Step 1: Write the proportion equation
1,189,140.74 : 1,641,005.89 = 645,262.69 : x - Step 2: Convert to fraction form
1,189,140.74/1,641,005.89 = 645,262.69/x - Step 3: Cross multiply
1,189,140.74x = 1,641,005.89 × 645,262.69 - Step 4: Simplify right side
1,189,140.74x = 1,058,879,874,887.24 - Step 5: Solve for x
x = 1,058,879,874,887.24/1,189,140.74 - Step 6: Final answer
x = 890,457.99
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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.