Finding the Fourth Proportional to 390,832.28, 581,977.84 and 376,467.94
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Solution
The fourth proportional to 390,832.28, 581,977.84 and 376,467.94 is: 560,588.29
Step by Step Solution
- Step 1: Write the proportion equation
390,832.28 : 581,977.84 = 376,467.94 : x - Step 2: Convert to fraction form
390,832.28/581,977.84 = 376,467.94/x - Step 3: Cross multiply
390,832.28x = 581,977.84 × 376,467.94 - Step 4: Simplify right side
390,832.28x = 219,095,998,550.45 - Step 5: Solve for x
x = 219,095,998,550.45/390,832.28 - Step 6: Final answer
x = 560,588.29
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.