Finding the Fourth Proportional to 1,221,592.20, 1,685,999.58 and 677,902.62
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Solution
The fourth proportional to 1,221,592.20, 1,685,999.58 and 677,902.62 is: 935,617.90
Step by Step Solution
- Step 1: Write the proportion equation
1,221,592.20 : 1,685,999.58 = 677,902.62 : x - Step 2: Convert to fraction form
1,221,592.20/1,685,999.58 = 677,902.62/x - Step 3: Cross multiply
1,221,592.20x = 1,685,999.58 × 677,902.62 - Step 4: Simplify right side
1,221,592.20x = 1,142,943,532,600.90 - Step 5: Solve for x
x = 1,142,943,532,600.90/1,221,592.20 - Step 6: Final answer
x = 935,617.90
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1.5x scale
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.