Finding the Fourth Proportional to 921,390.24, 1,382,271.12 and 388,911.84
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Solution
The fourth proportional to 921,390.24, 1,382,271.12 and 388,911.84 is: 583,446.17
Step by Step Solution
- Step 1: Write the proportion equation
921,390.24 : 1,382,271.12 = 388,911.84 : x - Step 2: Convert to fraction form
921,390.24/1,382,271.12 = 388,911.84/x - Step 3: Cross multiply
921,390.24x = 1,382,271.12 × 388,911.84 - Step 4: Simplify right side
921,390.24x = 537,581,604,658.06 - Step 5: Solve for x
x = 537,581,604,658.06/921,390.24 - Step 6: Final answer
x = 583,446.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.