Finding the Fourth Proportional to 1,290,220.26, 1,780,564.74 and 717,270
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Solution
The fourth proportional to 1,290,220.26, 1,780,564.74 and 717,270 is: 989,866.39
Step by Step Solution
- Step 1: Write the proportion equation
1,290,220.26 : 1,780,564.74 = 717,270 : x - Step 2: Convert to fraction form
1,290,220.26/1,780,564.74 = 717,270/x - Step 3: Cross multiply
1,290,220.26x = 1,780,564.74 × 717,270 - Step 4: Simplify right side
1,290,220.26x = 1,277,145,671,059.80 - Step 5: Solve for x
x = 1,277,145,671,059.80/1,290,220.26 - Step 6: Final answer
x = 989,866.39
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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.