Finding the Fourth Proportional to 1,217,286.36, 1,679,553.37 and 787,048.79
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Solution
The fourth proportional to 1,217,286.36, 1,679,553.37 and 787,048.79 is: 1,085,932.19
Step by Step Solution
- Step 1: Write the proportion equation
1,217,286.36 : 1,679,553.37 = 787,048.79 : x - Step 2: Convert to fraction form
1,217,286.36/1,679,553.37 = 787,048.79/x - Step 3: Cross multiply
1,217,286.36x = 1,679,553.37 × 787,048.79 - Step 4: Simplify right side
1,217,286.36x = 1,321,890,437,233.53 - Step 5: Solve for x
x = 1,321,890,437,233.53/1,217,286.36 - Step 6: Final answer
x = 1,085,932.19
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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.