Finding the Fourth Proportional to 1,217,286.45, 1,679,553.50 and 787,048.88
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Solution
The fourth proportional to 1,217,286.45, 1,679,553.50 and 787,048.88 is: 1,085,932.31
Step by Step Solution
- Step 1: Write the proportion equation
1,217,286.45 : 1,679,553.50 = 787,048.88 : x - Step 2: Convert to fraction form
1,217,286.45/1,679,553.50 = 787,048.88/x - Step 3: Cross multiply
1,217,286.45x = 1,679,553.50 × 787,048.88 - Step 4: Simplify right side
1,217,286.45x = 1,321,890,688,742.07 - Step 5: Solve for x
x = 1,321,890,688,742.07/1,217,286.45 - Step 6: Final answer
x = 1,085,932.31
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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.