Finding the Fourth Proportional to 1,189,350.20, 1,641,315.54 and 645,490.68
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Solution
The fourth proportional to 1,189,350.20, 1,641,315.54 and 645,490.68 is: 890,783.80
Step by Step Solution
- Step 1: Write the proportion equation
1,189,350.20 : 1,641,315.54 = 645,490.68 : x - Step 2: Convert to fraction form
1,189,350.20/1,641,315.54 = 645,490.68/x - Step 3: Cross multiply
1,189,350.20x = 1,641,315.54 × 645,490.68 - Step 4: Simplify right side
1,189,350.20x = 1,059,453,880,781.71 - Step 5: Solve for x
x = 1,059,453,880,781.71/1,189,350.20 - Step 6: Final answer
x = 890,783.80
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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.