Finding the Fourth Proportional to 668,977.68, 923,226.36 and 378,604.20
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Solution
The fourth proportional to 668,977.68, 923,226.36 and 378,604.20 is: 522,494.83
Step by Step Solution
- Step 1: Write the proportion equation
668,977.68 : 923,226.36 = 378,604.20 : x - Step 2: Convert to fraction form
668,977.68/923,226.36 = 378,604.20/x - Step 3: Cross multiply
668,977.68x = 923,226.36 × 378,604.20 - Step 4: Simplify right side
668,977.68x = 349,537,377,446.71 - Step 5: Solve for x
x = 349,537,377,446.71/668,977.68 - Step 6: Final answer
x = 522,494.83
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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.