Finding the Fourth Proportional to 1,239,566.09, 1,710,608.49 and 688,289.60
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Solution
The fourth proportional to 1,239,566.09, 1,710,608.49 and 688,289.60 is: 949,843.70
Step by Step Solution
- Step 1: Write the proportion equation
1,239,566.09 : 1,710,608.49 = 688,289.60 : x - Step 2: Convert to fraction form
1,239,566.09/1,710,608.49 = 688,289.60/x - Step 3: Cross multiply
1,239,566.09x = 1,710,608.49 × 688,289.60 - Step 4: Simplify right side
1,239,566.09x = 1,177,394,037,615.23 - Step 5: Solve for x
x = 1,177,394,037,615.23/1,239,566.09 - Step 6: Final answer
x = 949,843.70
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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.