Finding the Fourth Proportional to 1,388,306.36, 1,915,849.43 and 776,451.80
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Solution
The fourth proportional to 1,388,306.36, 1,915,849.43 and 776,451.80 is: 1,071,496.02
Step by Step Solution
- Step 1: Write the proportion equation
1,388,306.36 : 1,915,849.43 = 776,451.80 : x - Step 2: Convert to fraction form
1,388,306.36/1,915,849.43 = 776,451.80/x - Step 3: Cross multiply
1,388,306.36x = 1,915,849.43 × 776,451.80 - Step 4: Simplify right side
1,388,306.36x = 1,487,564,745,183.23 - Step 5: Solve for x
x = 1,487,564,745,183.23/1,388,306.36 - Step 6: Final answer
x = 1,071,496.02
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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.