Finding the Fourth Proportional to 425,789.06, 638,806.87 and 126,276.84
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Solution
The fourth proportional to 425,789.06, 638,806.87 and 126,276.84 is: 189,451.82
Step by Step Solution
- Step 1: Write the proportion equation
425,789.06 : 638,806.87 = 126,276.84 : x - Step 2: Convert to fraction form
425,789.06/638,806.87 = 126,276.84/x - Step 3: Cross multiply
425,789.06x = 638,806.87 × 126,276.84 - Step 4: Simplify right side
425,789.06x = 80,666,513,071.74 - Step 5: Solve for x
x = 80,666,513,071.74/425,789.06 - Step 6: Final answer
x = 189,451.82
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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.