Finding the Fourth Proportional to 1,388,750.40, 2,079,626.40 and 912,859.20
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Solution
The fourth proportional to 1,388,750.40, 2,079,626.40 and 912,859.20 is: 1,366,988.69
Step by Step Solution
- Step 1: Write the proportion equation
1,388,750.40 : 2,079,626.40 = 912,859.20 : x - Step 2: Convert to fraction form
1,388,750.40/2,079,626.40 = 912,859.20/x - Step 3: Cross multiply
1,388,750.40x = 2,079,626.40 × 912,859.20 - Step 4: Simplify right side
1,388,750.40x = 1,898,406,091,802.88 - Step 5: Solve for x
x = 1,898,406,091,802.88/1,388,750.40 - Step 6: Final answer
x = 1,366,988.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.