Finding the Fourth Proportional to 748,391.88, 1,121,803.72 and 348,703.08
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Solution
The fourth proportional to 748,391.88, 1,121,803.72 and 348,703.08 is: 522,689.28
Step by Step Solution
- Step 1: Write the proportion equation
748,391.88 : 1,121,803.72 = 348,703.08 : x - Step 2: Convert to fraction form
748,391.88/1,121,803.72 = 348,703.08/x - Step 3: Cross multiply
748,391.88x = 1,121,803.72 × 348,703.08 - Step 4: Simplify right side
748,391.88x = 391,176,412,319.46 - Step 5: Solve for x
x = 391,176,412,319.46/748,391.88 - Step 6: Final answer
x = 522,689.28
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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.