Finding the Fourth Proportional to 643,893.24, 888,576.11 and 402,315.92
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Solution
The fourth proportional to 643,893.24, 888,576.11 and 402,315.92 is: 555,198.12
Step by Step Solution
- Step 1: Write the proportion equation
643,893.24 : 888,576.11 = 402,315.92 : x - Step 2: Convert to fraction form
643,893.24/888,576.11 = 402,315.92/x - Step 3: Cross multiply
643,893.24x = 888,576.11 × 402,315.92 - Step 4: Simplify right side
643,893.24x = 357,488,315,184.67 - Step 5: Solve for x
x = 357,488,315,184.67/643,893.24 - Step 6: Final answer
x = 555,198.12
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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.