Finding the Fourth Proportional to 1,220,290.14, 1,683,430.84 and 767,830.62
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Solution
The fourth proportional to 1,220,290.14, 1,683,430.84 and 767,830.62 is: 1,059,247.88
Step by Step Solution
- Step 1: Write the proportion equation
1,220,290.14 : 1,683,430.84 = 767,830.62 : x - Step 2: Convert to fraction form
1,220,290.14/1,683,430.84 = 767,830.62/x - Step 3: Cross multiply
1,220,290.14x = 1,683,430.84 × 767,830.62 - Step 4: Simplify right side
1,220,290.14x = 1,292,589,745,604.32 - Step 5: Solve for x
x = 1,292,589,745,604.32/1,220,290.14 - Step 6: Final answer
x = 1,059,247.88
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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.