Finding the Fourth Proportional to 543,153.12, 749,641.41 and 316,798.62
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Solution
The fourth proportional to 543,153.12, 749,641.41 and 316,798.62 is: 437,234.65
Step by Step Solution
- Step 1: Write the proportion equation
543,153.12 : 749,641.41 = 316,798.62 : x - Step 2: Convert to fraction form
543,153.12/749,641.41 = 316,798.62/x - Step 3: Cross multiply
543,153.12x = 749,641.41 × 316,798.62 - Step 4: Simplify right side
543,153.12x = 237,485,364,182.85 - Step 5: Solve for x
x = 237,485,364,182.85/543,153.12 - Step 6: Final answer
x = 437,234.65
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1.5x scale
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.