Finding the Fourth Proportional to 426,364.05, 639,434.70 and 126,763.95
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Solution
The fourth proportional to 426,364.05, 639,434.70 and 126,763.95 is: 190,112.81
Step by Step Solution
- Step 1: Write the proportion equation
426,364.05 : 639,434.70 = 126,763.95 : x - Step 2: Convert to fraction form
426,364.05/639,434.70 = 126,763.95/x - Step 3: Cross multiply
426,364.05x = 639,434.70 × 126,763.95 - Step 4: Simplify right side
426,364.05x = 81,057,268,339.07 - Step 5: Solve for x
x = 81,057,268,339.07/426,364.05 - Step 6: Final answer
x = 190,112.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.