Finding the Fourth Proportional to 1,245,136.80, 1,867,705.20 and 1,132,943.70
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Solution
The fourth proportional to 1,245,136.80, 1,867,705.20 and 1,132,943.70 is: 1,699,415.55
Step by Step Solution
- Step 1: Write the proportion equation
1,245,136.80 : 1,867,705.20 = 1,132,943.70 : x - Step 2: Convert to fraction form
1,245,136.80/1,867,705.20 = 1,132,943.70/x - Step 3: Cross multiply
1,245,136.80x = 1,867,705.20 × 1,132,943.70 - Step 4: Simplify right side
1,245,136.80x = 2,116,004,839,797.24 - Step 5: Solve for x
x = 2,116,004,839,797.24/1,245,136.80 - Step 6: Final answer
x = 1,699,415.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.